[Tex/LaTex] How to remove parentheses from year in the references in chicago bibliography style

bibliographiesbibtexchicago-stylecross-referencing

I'm using chicago bibliography style (\bibliographystyle{chicago}) and the references appear like:

Leibowitz, A. (1974). Education and home production. The American
Economic Review 64(2), 243-250

What I need is to remove the parentheses from the year. It should be like this:

Leibowitz, A. 1974. Education and home production. The American
Economic Review 64(2), 243-250.

How can I get this?

Best Answer

copy the file chicago.bst to mychicago.bst. Then search for 

FUNCTION {output.year.check}
{ year empty$
     { "empty year in " cite$ * warning$ }
     { write$
        " (" year * extra.label *
       month empty$
          { ")" * }
          { ", " * month * ")" * }
       if$
       mid.sentence 'output.state :=
     }
  if$
}

and change it to

FUNCTION {output.year.check}
{ year empty$
     { "empty year in " cite$ * warning$ }
     { write$
%        " (" year * extra.label *
         " " year * extra.label *
       month empty$
%          { ")" * }
%          { ", " * month * ")" * }
          {}
          { ", " * month * }
       if$
       mid.sentence 'output.state :=
     }
  if$
}

if you are not familiar with the TeX directory structure then put the file into your documents folder and, of course, use

\bibliographystyle{mychicago}
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