[Tex/LaTex] Why some citations work while others don’t

citing

It is hard for me to understand why some citations would work and the other wouldn't? 

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    \begin{document}

    I would like to cite \citep{Laroche2001} and \citep{Thogersen2002} and \citep{Young2010}

    \bibliographystyle{apalike} 

\bibliography{LiteratureSust} 

    \end{document}

These are the citations, where 1st and 3rd work but 2nd doesn't work):

@InCollection{Thogersen2002,
    author = {Thogersen, J.},
    title = {Promoting "green'' consumer behavior with eco- labels},
    booktitle = {New tools for environmental protection: Education, information, and voluntary measures},
    pages = {83-104},
    publisher = {Washington DC: National Academy Press},
    editor = {In T. Dietz \& P. Stern (Eds.)},
    year = {2002},
}
@ARTICLE{Laroche2001,
  AUTHOR =       "Laroche, M. and Bergeron, J. and Barbaro-Forleo, G.",
  TITLE =        "Targeting consumers who are willing to pay more for environmentally friendly products",
  JOURNAL =      "Journal of Consumer Marketing,",
  YEAR =         "2001",
  volume =       "18",
  number =       "6",
  pages =        "503-520",
}



@ARTICLE{Young2010,
  AUTHOR =       " Young, W. and Hwang, K and  McDonald, S. and  Oates, C. J.",
  TITLE =        "Sustainable consumption: Green consumer behaviour when purchasing products",
  JOURNAL =      "Sustainable Development,",
  YEAR =         "2010",
  volume =       "18",
  number =       "1",
  pages =        " 20-31",
}

After following one of the comments, this is what I have now:

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    This is pdfTeX, Version 3.14159265-2.6-1.40.16 (TeX Live 2015) (preloaded format=pdflatex)
 restricted \write18 enabled.
entering extended mode
(./Sustainability_Compreh_Paper.tex
LaTeX2e <2015/01/01>
Babel <3.9l> and hyphenation patterns for 79 languages loaded.
(/usr/local/texlive/2015/texmf-dist/tex/latex/base/article.cls
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
(/usr/local/texlive/2015/texmf-dist/tex/latex/base/size12.clo))
(/usr/local/texlive/2015/texmf-dist/tex/latex/geometry/geometry.sty
(/usr/local/texlive/2015/texmf-dist/tex/latex/graphics/keyval.sty)
(/usr/local/texlive/2015/texmf-dist/tex/generic/oberdiek/ifpdf.sty)
(/usr/local/texlive/2015/texmf-dist/tex/generic/oberdiek/ifvtex.sty)
(/usr/local/texlive/2015/texmf-dist/tex/generic/ifxetex/ifxetex.sty))
(/usr/local/texlive/2015/texmf-dist/tex/latex/amsmath/amsmath.sty
For additional information on amsmath, use the `?' option.
(/usr/local/texlive/2015/texmf-dist/tex/latex/amsmath/amstext.sty
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(/usr/local/texlive/2015/texmf-dist/tex/latex/amscls/amsthm.sty)
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(/usr/local/texlive/2015/texmf-dist/tex/latex/amsfonts/amsfonts.sty))
(/usr/local/texlive/2015/texmf-dist/tex/latex/graphics/graphicx.sty
(/usr/local/texlive/2015/texmf-dist/tex/latex/graphics/graphics.sty
(/usr/local/texlive/2015/texmf-dist/tex/latex/graphics/trig.sty)
(/usr/local/texlive/2015/texmf-dist/tex/latex/latexconfig/graphics.cfg)
(/usr/local/texlive/2015/texmf-dist/tex/latex/pdftex-def/pdftex.def
(/usr/local/texlive/2015/texmf-dist/tex/generic/oberdiek/infwarerr.sty)
(/usr/local/texlive/2015/texmf-dist/tex/generic/oberdiek/ltxcmds.sty))))
(/usr/local/texlive/2015/texmf-dist/tex/latex/tools/verbatim.sty)
(/usr/local/texlive/2015/texmf-dist/tex/latex/setspace/setspace.sty)
(/usr/local/texlive/2015/texmf-dist/tex/latex/natbib/natbib.sty)
(/usr/local/texlive/2015/texmf-dist/tex/latex/comment/comment.sty
Excluding comment 'comment') (./Sustainability_Compreh_Paper.aux)
*geometry* driver: auto-detecting
*geometry* detected driver: pdftex
(/usr/local/texlive/2015/texmf-dist/tex/context/base/supp-pdf.mkii
[Loading MPS to PDF converter (version 2006.09.02).]
) (/usr/local/texlive/2015/texmf-dist/tex/generic/oberdiek/pdftexcmds.sty
(/usr/local/texlive/2015/texmf-dist/tex/generic/oberdiek/ifluatex.sty))
(/usr/local/texlive/2015/texmf-dist/tex/latex/oberdiek/epstopdf-base.sty
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LaTeX Warning: No \author given.


Package natbib Warning: Citation `EPA2016' on page 1 undefined on input line 54
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Package natbib Warning: Citation `Boyle2009' on page 1 undefined on input line 
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Package natbib Warning: Citation `EPA2016' on page 1 undefined on input line 57
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Package natbib Warning: Citation `Linton2007' on page 1 undefined on input line
 57.


Package natbib Warning: Citation `CocaCola2015' on page 1 undefined on input li
ne 57.


Package natbib Warning: Citation `Knickle2011' on page 1 undefined on input lin
e 57.


Package natbib Warning: Citation `Nestle2015' on page 1 undefined on input line
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Package natbib Warning: Citation `Kraft2015' on page 1 undefined on input line 
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Package natbib Warning: Citation `Canada2009' on page 1 undefined on input line
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[1{/usr/local/texlive/2015/texmf-var/fonts/map/pdftex/updmap/pdftex.map}]

Package natbib Warning: Citation `UN2005' on page 2 undefined on input line 64.



Package natbib Warning: Citation `Gleim2013' on page 2 undefined on input line 
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Package natbib Warning: Citation `CR2007' on page 2 undefined on input line 64.



Package natbib Warning: Citation `luchs2010' on page 2 undefined on input line 
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Package natbib Warning: Citation `Balakrishnan2014' on page 2 undefined on inpu
t line 70.

[2]

Package natbib Warning: Citation `Johnsson1998' on page 3 undefined on input li
ne 74.

[3] [4] [5] <7.jpg, id=23, 2081.7775pt x 1513.655pt> <use 7.jpg> [6 <./7.jpg>]
[7] [8] [9] Excluding 'comment' comment. [10] [11]
<3.jpg, id=45, 2081.7775pt x 1513.655pt> <use 3.jpg>
Underfull \hbox (badness 10000) in paragraph at lines 242--243


Overfull \hbox (25.84772pt too wide) in paragraph at lines 291--294
\OT1/cmr/m/n/12 bil-ity func-tion, such that in-creas-ing $\OML/cmm/m/it/12 x$ 
\OT1/cmr/m/n/12 by 1 im-plies chang-ing fail-ure prob-a-bil-ity from $[][\OMS/c
msy/m/n/12 ^^@ []\OT1/cmr/m/n/12 (\OML/cmm/m/it/12 ^^L[] \OT1/cmr/m/n/12 +
[12 <./3.jpg>] Excluding 'comment' comment. [13] Excluding 'comment' comment.
Excluding 'comment' comment. Excluding 'comment' comment.

Package natbib Warning: Citation `Young2010' on page 14 undefined on input line
 427.


Package natbib Warning: Citation `Laroche2001' on page 14 undefined on input li
ne 429.


Package natbib Warning: Citation `Bronnenberg2008' on page 14 undefined on inpu
t line 430.

(./Sustainability_Compreh_Paper.bbl)

Package natbib Warning: There were undefined citations.

[14] (./Sustainability_Compreh_Paper.aux) )
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Output written on Sustainability_Compreh_Paper.pdf (14 pages, 685179 bytes).
SyncTeX written on Sustainability_Compreh_Paper.synctex.gz.
Transcript written on Sustainability_Compreh_Paper.log.

EDIT2: I do have these codes and still receive errors.

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FINAL UPDATE:

I found the cause of my question marks in the document. In the LaTeX coding, I didn't include `\usepackage{url}'. I didn't know that for url citations you need that code (and in the original file, I had a plenty of them). Once I included it, everything worked.

Best Answer

This answer addresses the original version of the question, and reflects problems with the posted code and bibliography entries.

The correct way to enter the Author field in a .bib file is:

Surname1, FirstName and Surname2, FirstName2 and Surname3, FirstName3

You need to separate each name with and and separate surnames from first names (or initials) with a comma. The order must always be Surname, FirstName for all names.

Although some other formats will work, (for example FirstName LastName will be treated correctly but will fail with two name surnames, for example) the method using Surname, FirstName is the best practice to get into the habit of doing.

There are other problems with the particular .bib entries you posted:

  • commas in some fields e.g. after journal names
  • formatting in the editor field; this field should contain only names, entered in the same way as regular author names
  • page numbers with hyphens (-) instead of en-dashes (--); this is not always necessary to do, but is also a good habit to get into

But none of these issues will result in the problem you are describing in your edited question because you are posting errors from a different document. The document you posted plus the exact .bib entries you posted will produce a compilable document. Although the formatting of the bibliography will be incorrect, the document will produce no errors.

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