To cite package ‘WikidataR’ in publications use:

  Shafee T, Keyes O, Signorelli S (2021). _WikidataR: Read-Write API
  Client Library for Wikidata_. R package version 2.3.3,
  <https://github.com/ts404/wikidatar>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {WikidataR: Read-Write API Client Library for Wikidata},
    author = {Thomas Shafee and Os Keyes and Serena Signorelli},
    year = {2021},
    note = {R package version 2.3.3},
    url = {https://github.com/ts404/wikidatar},
  }