To cite package 'rdomains' in publications use:

Sood G (2022). rdomains: Classify Domains Based on Their Content. R package version 0.2.1.

Corresponding BibTeX entry:

  @Manual{,
    title = {rdomains: Classify Domains Based on Their Content},
    author = {Gaurav Sood},
    year = {2022},
    note = {R package version 0.2.1},
  }