To cite package ‘assertable’ in publications use:

Nguyen G (2021). assertable: Verbose Assertions for Tabular Data (Data.frames and Data.tables). R package version 0.2.8, https://github.com/gnguy/assertable.

Corresponding BibTeX entry:

  @Manual{,
    title = {assertable: Verbose Assertions for Tabular Data
      (Data.frames and Data.tables)},
    author = {Grant Nguyen},
    year = {2021},
    note = {R package version 0.2.8},
    url = {https://github.com/gnguy/assertable},
  }