I used to change the citation style in my documents using the bloc of commands:


Here is my MWE:

\citet[22]{Draa2019} states that ...

the bib file contant is the following

title={{The Impact of Translation on Reading Comprehension for EST Learners - A Case Study of Computer Science Students at Constantine 2 University}}, 
journal={{Revue Sciences Humaines}},
author={Draa, A.}, 
pages={135 --150 },

I wanted to replace the comma separating the author from the year with the space, and to replace the comma of the note (page number) with a colon.

But, this is no longer working, maybe due to an update of bibtex/natbib versions.

Any help please?

Thank you very much.

  • Could you try and see if \setcitestyle{authoryear} helps?
    – Natasha
    Sep 8, 2021 at 17:17
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    Welcome to TeX.SE. Please clarify what you mean by "\setcitestyle no longer working". For sure, if I compile your test document, citet[22]{Draa2019} produces "Draa [2019:22]", while \citep{Draa2019} produces "[Draa 2019]". Both are exactly what one would expect from \setcitestyle{notesep={:},aysep={}}.
    – Mico
    Sep 8, 2021 at 17:32
  • 1
    @AmerDraa - The command \setcitestyle is provided by the natbib package. As long as natbib is loaded properly, \setcitestyle should work too.
    – Mico
    Sep 8, 2021 at 18:26
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    @AmerDraa - I use TeXLive2021 as well (actually, MacTeX2021) and natbib 2010/09/13 8.31b. The natbib package has remained unchanged for the past 11 years. Not sure what you mean by "an older version of natbib".
    – Mico
    Sep 8, 2021 at 19:04
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    @Mico - I just compared the two .sty files; that installed on my 2021 texlive folder is an old one: [2003/06/06 7.1 (PWD)], while that which solved the problem is a newer one: [2010/09/13 8.31b (PWD, AO)]. The folowing commands, among others, are missing from the former file: % Defining the citation mode and punctual (citation style) 98 % \setcitestyle{<comma-separated list of keywords, same 99 % as the package options>} 100 % Example: \setcitestyle{square,semicolon} 101 % Alternatively:.
    – Amer Draa
    Sep 8, 2021 at 21:44

1 Answer 1


After checking,

The package installed in texlive 2021 does not cause bugs; it seems that the 'natbib.sty' file has been previously replaced by an older version. It is likely I did when trying to solve other issues or doing other adjustments.

Sorry for the inconvenience and thank you to everyone.

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