To cite package ‘forwards’ in publications use:

Turner H, Keyes O (2019). forwards: Data from Surveys Conducted by Forwards. R package version 0.1.3, https://github.com/forwards/forwards.

Corresponding BibTeX entry:

  @Manual{,
    title = {forwards: Data from Surveys Conducted by Forwards},
    author = {Heather Turner and Oliver Keyes},
    year = {2019},
    note = {R package version 0.1.3},
    url = {https://github.com/forwards/forwards},
  }