To cite package ‘oii’ in publications use:

Hale S, Bright J, Blank G (2017). oii: Crosstab and Statistical Tests for OII MSc Stats Course. R package version 1.0.2.1, https://CRAN.R-project.org/package=oii.

Corresponding BibTeX entry:

  @Manual{,
    title = {oii: Crosstab and Statistical Tests for OII MSc Stats
      Course},
    author = {Scott Hale and Jon Bright and Grant Blank},
    year = {2017},
    note = {R package version 1.0.2.1},
    url = {https://CRAN.R-project.org/package=oii},
  }