To cite package ‘qcr’ in publications use:

  Flores M, Fernandez-Casal R, Naya S, Tarrio-Saavedra J (2021). _qcr:
  Quality Control Review_. R package version 1.3,
  <https://github.com/mflores72000/qcr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {qcr: Quality Control Review},
    author = {Miguel Flores and Ruben Fernandez-Casal and Salvador Naya and Javier Tarrio-Saavedra},
    year = {2021},
    note = {R package version 1.3},
    url = {https://github.com/mflores72000/qcr},
  }