To cite package ‘rzentra’ in publications use:

Szöcs E (2020). rzentra: Client for the 'ZENTRA Cloud' API. R package version 0.1.0, https://CRAN.R-project.org/package=rzentra.

Corresponding BibTeX entry:

  @Manual{,
    title = {rzentra: Client for the 'ZENTRA Cloud' API},
    author = {Eduard Szöcs},
    year = {2020},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=rzentra},
  }