[R] citing old(er) versions of packages

Ivan Calandra c@|@ndr@ @end|ng |rom rgzm@de
Thu Jan 16 18:03:55 CET 2020

Dear useRs,

I want to cite the packages I have used in my analyses for a paper. I
have recorded through sessionInfo() which packages and which versions I
used for a given analysis.

I know how to cite a package using the citation() function, but the
problem is that in the meantime, I have updated these packages.
citation() returns the citation for the actual installed version. And
citations change over time (e.g. with more people getting involved in
the development and maintenance of a package).

Now the question is how do I find out how to cite a given, not actual
version of a package?

Thank you in advance.
Best regards,

Dr. Ivan Calandra
TraCEr, laboratory for Traceology and Controlled Experiments
MONREPOS Archaeological Research Centre and
Museum for Human Behavioural Evolution
Schloss Monrepos
56567 Neuwied, Germany
+49 (0) 2631 9772-243

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