To cite package ‘ottr’ in publications use:

Pyles C (2025). ottr: An R Autograding Extension for Otter-Grader. R package version 1.5.3, https://CRAN.R-project.org/package=ottr.

Corresponding BibTeX entry:

  @Manual{,
    title = {ottr: An R Autograding Extension for Otter-Grader},
    author = {Christopher Pyles},
    year = {2025},
    note = {R package version 1.5.3},
    url = {https://CRAN.R-project.org/package=ottr},
  }