When I have multiple papers to refer to in the same breath by the same author, the second reference year always prints as 0 and with no space after the comma, even though the full reference is indeed available in my bibliography file. So while my PDF contains...

image showing Jackendoff (2006,0).

...I want it instead to read and Parallel Architecture (PA: Jackendoff, 2006, 2002). No matter how I fiddle with the citekeys I can't get it to output correctly.

The command in question is written \citep[PA:][]{jackendoff2006, jackendoff2002}, with the relevant packages used being:

\usepackage{apacite} \usepackage[longnamesfirst]{natbib}

and these commands just before ending the document:

\bibliographystyle{apalike} \bibliography{../ReferenceFilePhD}

Everything else works fine, including multiple in-line references by different authors. So anyone have any ideas? Thanks!

UPDATE: Thanks for your requests! As you know, I'm new here, but I'll do my best with an MWE -- I just don't know how to integrate the bibtex formatting of my references with a document-internal call to them. Here is the true MWE (which does output the error I get), referring to an external reference file:

\dots and Parallel Architecture \citep[PA:][]{jackendoff2006, jackendoff2002} \dots

And the reference entries are:

Author = {Jackendoff, Ray},
Publisher = {Oxford, UK: Oxford University Press},
Title = {Foundations of language: Brain, meaning, grammar, evolution},
Year = {2002}}


Author = {Jackendoff, Ray},
Journal = {Brain Research},
Pages = {2--22},
Title = {A parallel architecture perspective on language processing},
Volume = {1146},
Year = {2006}}
  • 1
    Welcome to TeX.SX! Please help us to help you and add a minimal working example (MWE) that illustrates your problem. It will be much easier for us to reproduce your situation and find out what the issue is when we see compilable code, starting with \documentclass{...} and ending with \end{document}. – user31729 Jan 9 '15 at 16:35
  • At a minimum, do post the complete entries for jackendoff2006 and jackendoff2002. – Mico Jan 9 '15 at 20:24
  • Right on! Please see the additions above -- are they sufficient? Thanks so much. – leebs Jan 10 '15 at 0:12

I know it is an old request but since I can't seem to find any direct answers, I though I might post it here to help people with the same problem:

just change




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