I use


When LaTeX produces my bibliography it also outputs the reference identifier..

This is what I have in my .bib file.

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And this is what is printed in my PDF.

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Why is the reference identifier printed in the PDF?

  • 1
    Welcome to TeX.se! For future questions, it's helpful to add a compilable sample document rather than code fragments, and instead of posting images of your .bib file, posting the actual .bib entry also as code. You can format code by selecting it and clicking on the {} icon.
    – Alan Munn
    May 13, 2019 at 17:02

1 Answer 1


The apacite package must be loaded to use the apacite bibliography style. You can use natbib citation commands by adding the natbibapa package option, but remove your \usepackage[...]{natbib} line from the preamble when you do.

So you need:


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