To cite package ‘onelogin’ in publications use:

  Gold A (2019). _onelogin: Interact with the 'OneLogin' API_. R
  package version 0.2.1, <https://github.com/alexkgold/onelogin>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {onelogin: Interact with the 'OneLogin' API},
    author = {Alex Gold},
    year = {2019},
    note = {R package version 0.2.1},
    url = {https://github.com/alexkgold/onelogin},
  }