To cite inspector in publications use:

Fonseca P (2020). inspector: Validation of Arguments and Objects in User-Defined Functions. R package version 1.0.1, https://pedro-teles-fonseca.github.io/inspector/.

Corresponding BibTeX entry:

  @Manual{,
    title = {inspector: Validation of Arguments and Objects in
      User-Defined Functions},
    author = {Pedro Fonseca},
    year = {2020},
    note = {R package version 1.0.1},
    url = {https://pedro-teles-fonseca.github.io/inspector/},
  }