When I try to compile my .bib file, I get the following error message:

This is BibTeX, Version 0.99d (TeX Live 2016/W32TeX)
The top-level auxiliary file: DissertationProposal_07-02-17.aux
The style file: apacite.bst
Illegal, another \bibstyle command---line 273 of file DissertationProposal_07-02-17.aux
 : \bibstyle
 :          {apacite}
I'm skipping whatever remains of this command
Illegal, another \bibdata command---line 274 of file DissertationProposal_07-02-17.aux
 : \bibdata
 :         {Dissertation}
I'm skipping whatever remains of this command
Database file #1: Dissertation.bib
apacite.bst [2013/07/21 v6.03 APA bibliography style]
Warning--`others' not consistent with 6th ed. of the APA Manual
(There were 2 error messages)

What seems to be happening is that two \bibstyle commands are inserted into the .aux file. I looked at the .bib file, and I see no problems with it. What do I need to do to make BiBTeX compile properly?

Below is an example that outlines my preamble:



I will use a simplification of the batch means stopping rule for MCMC suggested by \cite{JonesHCN06}. While Jones, et al. allow both the number of batches and the batch size to increase with each MCMC iteration, for computational simplicty, I will base the batch size on the square root of the maximum number of iterations, $s_\text{max}$:
$$ n_\text{batch}=\text{floor}\left(\sqrt{s_\text{max}}\right).$$
I will store the mean of every $n_\text{batch}$ iterations in a vector 
$$\textbf{b} = \left(\bar{Y}_1, \bar{Y}_2, \dots, \bar{Y}_{b_\text{max}}\right),$$
where $b_\text{max}$ is the maximum number of batches, and is given by
$$b_\text{max} = \text{floor}\left(\frac{s_\text{max}}{n_\text{batch}}\right) + 1.$$



Here is the .bib entry that is causing me trouble:

title={Fixed-width output analysis for {M}arkov chain {M}onte {C}arlo},
author={Jones, Galin L and Haran, Murali and Caffo, Brian S and Neath, Ronald},
journal={Journal of the American Statistical Association},
publisher={Taylor \& Francis}

Thanks in advance.

  • This certainly doesn't come from the .bib file. What is your preamble and your document class?
    – Bernard
    Jul 3, 2017 at 0:39
  • What do you mean by compiling your bib file? You shouldn't compile your bib file at all!
    – cfr
    Jul 3, 2017 at 1:04
  • Try removing all generated files (especially the .aux) and recompiling if you had an error you've fixed. Otherwise, can you give us a minimal example we can use to reproduce the problem?
    – cfr
    Jul 3, 2017 at 1:10
  • @cfr, I have a reference that does not appear as cited. Instead of (Jones, Haran, Caffo, & Neath, 2006), which is what I should get, instead I get (!)JonesHCN06, which is the label I used to identify the citation in the .bib file. I thought that using shift+ctrl+b in WinEdt would compile the bibliography, and correct the citation error. Jul 3, 2017 at 1:14
  • Then probably the error is there. But you've given no code, so impossible to say. When you run bibtex, do you get errors?
    – cfr
    Jul 3, 2017 at 1:19

1 Answer 1


I wasn't able to figure out how the second \bibliography statement ended up in the .aux file.

So, instead, I manually typed the citation, and followed it with \nocite{JonesHCN06} to make sure the citation appeared in the bibliography.

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