To cite package ‘shelter’ in publications use:

  Nutter B, Wu H, Beck C, Obregon S (2024). _shelter: Support for
  Secure API Key Management_. R package version 0.1.1,
  <https://github.com/vubiostat/shelter>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {shelter: Support for Secure API Key Management},
    author = {Benjamin Nutter and Hui Wu and Cole Beck and Savannah Obregon},
    year = {2024},
    note = {R package version 0.1.1},
    url = {https://github.com/vubiostat/shelter},
  }