This problem is due to biblatex-apa's (apa.bbx's) apaauthor name format; you might want to notify the author of this small bug.
The string and others in the author list sets ifmorenames to true. apaauthor checks for this case whenever a name is printed, not just at the very end of the list; consequently it prints the andothers string ("et al.") after each name.
The fix is to add the following lines to your preamble.
\DeclareNameFormat{apaauthor}{%
\ifthenelse{\value{listcount}=\maxprtauth\AND\value{listcount}<\value{listtotal}}
{\addcomma\addspace\ldots\addspace}
{\ifthenelse{\value{listcount}>\maxprtauth\AND\value{listcount}<\value{listtotal}}
{}
{\ifthenelse{\iffieldequalstr{doubtfulauthor}{true}}
{\mkbibbrackets{\usebibmacro{name:apa:last-first}{#1}{#3}{#4}{#5}{#7}?}}
{\usebibmacro{name:apa:last-first}{#1}{#3}{#4}{#5}{#7}}}}%
\ifthenelse{\value{listcount}=\value{listtotal}}% this test is new
{\ifmorenames{\andothersdelim\bibstring{andothers}}{}}{}}
The MWE
\RequirePackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@Article{boker2011,
Author = {Boker, S. and Neale, M. and Maes, H. and Wilde, M. and
Spiegel, M. and Brick, T. and Spies, J. and Estabrook,
R. and Kenny, S. and Bates, T. and others},
Title = {Open{M}x: {A}n open source extended structural
equation modeling framework},
Journal = {Psychometrika},
Volume = {76},
Number = {2},
Pages = {306--317},
year = 2011
}
\documentclass{apa6}
\usepackage[american]{babel}
\usepackage{csquotes}
\usepackage[style=apa,maxnames=999,sortcites=true,sorting=nyt,apabackref=true,backend=biber]{biblatex}
\DeclareLanguageMapping{american}{american-apa}
\addbibresource{\jobname.bib}
\addbibresource{biblatex-examples.bib}
\DeclareNameFormat{apaauthor}{%
\ifthenelse{\value{listcount}=\maxprtauth\AND\value{listcount}<\value{listtotal}}
{\addcomma\addspace\ldots\addspace}
{\ifthenelse{\value{listcount}>\maxprtauth\AND\value{listcount}<\value{listtotal}}
{}
{\ifthenelse{\iffieldequalstr{doubtfulauthor}{true}}
{\mkbibbrackets{\usebibmacro{name:apa:last-first}{#1}{#3}{#4}{#5}{#7}?}}
{\usebibmacro{name:apa:last-first}{#1}{#3}{#4}{#5}{#7}}}}%
\ifthenelse{\value{listcount}=\value{listtotal}}
{\ifmorenames{\andothersdelim\bibstring{andothers}}{}}{}}
\shorttitle{IFA}
\begin{document}
OpenMx \parencite{boker2011,aksin,wilde,murray}
\printbibliography
\end{document}
then yields
Update 2013-10: This has been corrected in biblatex-apa version 6.4 according to a comment below the question from user PLK.
First thing to do is to add a field for the journal abbreviation to the article entrytype, journalabbr in the MWE. Therefore you need to declare a datamodel (an extra file; in the MWE I've used filecontents to simulate that) and you have to tell biblatex/biber to use it in the package options.
Then you have to modify the cite command, so it fits your needs. \citep from the authoryear-style (your citestyle) uses the \cite command. There you just have to add a switch, which checks if the field journalabbr is empty or not, and prints it out or not.
Last but not least you have to add the abbreviation fields to the entries.
MWE:
\begin{filecontents}{min.bib}
@article{boisson2003unexpected,
title={Unexpected protein families including cell defense components feature in the N-myristoylome of a higher eukaryote},
author={Boisson, B. and Giglione, Carmela and Meinnel, Thierry},
journal={Journal of Biological Chemistry},
journalabbr={JBC},
year={2003},
publisher={ASBMB}
}
\end{filecontents}
\begin{filecontents}{authorjabbryear.dbx}
\ProvidesFile{authorjabbryear.dbx}
\DeclareDatamodelFields[type=field,datatype=literal]{journalabbr}
\DeclareDatamodelEntryfields[article]{journalabbr}
\end{filecontents}
\documentclass[fontsize=11pt, paper=a4, ngerman, DIV=calc]{scrartcl}
\usepackage[scaled]{helvet}
\renewcommand*\familydefault{\sfdefault}
\usepackage{fixltx2e}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{babel}
\usepackage[german=quotes]{csquotes}
\usepackage[style=authoryear-comp,sortcites=true,sorting=nyt,isbn=false,natbib=true, citestyle=authoryear,bibstyle=authoryear,backend=biber,maxnames=1,maxcitenames=1,
,datamodel=authorjabbryear%added!
] {biblatex}
\DefineBibliographyStrings{ngerman}{ andothers = {{et\,al\adddot}} }
\renewbibmacro*{cite}{%from authoryear.cbx
\iffieldundef{shorthand}
{\ifthenelse{\ifnameundef{labelname}\OR\iffieldundef{labelyear}}
{\usebibmacro{cite:label}%
\setunit{\addspace}}
{\printnames{labelname}%
\setunit{\nameyeardelim}}%
\iffieldundef{journalabbr}{}{%
\printfield{journalabbr}%
\setunit{\nameyeardelim}%
}%
\usebibmacro{cite:labelyear+extrayear}}
{\usebibmacro{cite:shorthand}}}
\addbibresource{min.bib}
\begin{document}
\citep{boisson2003unexpected}
How it should look like:
(Boisson et al., JBC, 2003)
\printbibliography
\end{document}
Best Answer
In
ieee.bbxwe find the linesSo
biblatextries to use thedatemacro (which actually just defaults to\printdate) and wrap its output into parentheses. If it does not print anything, well, then an empty string is wrapped into parentheses, resulting in what you got above.The obvious cure is to provide the entry with a
datefield (after all, [almost] every bib entry should have one, see also Joseph Wright's comment above), this can be difficult and outright impossible with some@onlineresources though.Since we do not want to rewrite the whole
@onlinedriver (an obvious way to fix the problem), we patch it usingxpatch.Load
\usepackage{xpatch}and put this code into your preambleIt will replace the offending line discussed above (
\printtext[parens]{\usebibmacro{date}}) by a (more or less sophisticated) construction in which we check if there is ayearfield (i.e. a sufficient date field) and only if that condition is met (i.e. only if a year exists; here of course we presuppose thatyearis the bare minimum requirement for a date output in the bibliography) we go on to print the date, otherwise nothing is done.