To cite package 'season' in publications use:

Barnett AG, Dobson AJ (2010). Analysing Seasonal Health Data. Springer, Berlin, Heidelberg.

Barnett AG, Baker PJ, Dobson AJ (2020). season: Analysing Seasonal Data R Functions. R package version 0.3.11.

Corresponding BibTeX entries:

  @Book{,
    title = {Analysing Seasonal Health Data},
    author = {Adrian G Barnett and Annette J Dobson},
    publisher = {Springer},
    address = {Berlin, Heidelberg},
    year = {2010},
  }

  @Manual{,
    title = {season: Analysing Seasonal Data R Functions},
    author = {Adrian G Barnett and Peter J Baker and Annette J Dobson},
    year = {2020},
    note = {R package version 0.3.11},
  }