To cite package ‘oystr’ in publications use:

  Dray M (2024). _oystr: Handle Personal Oyster Journey History Data
  Provided by Transport for London_. R package version 0.0.0.9000, ,
  <https://github.com/matt-dray/oystr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {oystr: Handle Personal Oyster Journey History Data Provided by
Transport for London},
    author = {Matt Dray},
    year = {2024},
    note = {R package version 0.0.0.9000, 
},
    url = {https://github.com/matt-dray/oystr},
  }