Hello, I am using the bibliography and bibliography style packages, but as you can see in the image, Pages and Edition are appearing in English. How do I change to Portuguese?

  • Do pleease tell us which bibliography style you employ.
    – Mico
    May 11, 2021 at 15:07
  • using in the bibliographic style is plain May 11, 2021 at 15:11
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    page = página ; pages = páginas ; edition = edição May 11, 2021 at 16:06
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    Packages babel or polyglossia usually translate that words. May 11, 2021 at 17:12
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    @SergioLlorente - babel and polyglossia will change sectioning headers such "References". However, they do not modify the innards of the plain bibliography style file.
    – Mico
    May 11, 2021 at 17:17

1 Answer 1


First, I would like to recommend that you employ (and modify) the plainnat rather than the plain bib style. plainnat is a re-implementation of the decades-old plain style that has been augmented to recognize field names such as url, isbn, issn, doi, and eid. The plainnat bib style is also capable of producing both authoryear-style and numeric-style citation call-outs; all you need to do is switch between \usepackage[authoryear,round]{natbib} and \usepackage[numbers,square]{natbib}.

Second, here's how you might could go about assuring that the formatted bibliographic entries use Portuguese rather than English words.

  • Find the file plainnat.bst in your TeX distribution. Make a copy of this file and call the copy, say, plainnat-pt.bst.

  • Open the file plainnat-pt.bst in a text editor. The program you use to edit your tex files will do fine.

  • In the bst file, change all 3 instances of " and " to " e ", both instances of "page" to "página", both instances of "pages" to "páginas", and all 4 instances of " edition" to " edição".

  • Save the file plainnat-pt.bst either in the directory that houses your main tex file(s) or in a directory that's searched by BibTeX. If you choose the latter option, be sure to update the filename database of your TeX distribution suitably.

  • In your main tex file, change \bibliographstyle{plain} to \bibliographystyle{plainnat-pt}, be sure to load natbib with the required options, and perform a full recompile cycle: LaTeX, BibTeX, and LaTeX twice more.

Happy BibTeXing!

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