To cite package ‘ef’ in publications use:

Millar C, Fryer R, Malcolm I, Glover R (2020). ef: Modelling Framework for the Estimation of Salmonid Abundance. R package version 1.2.0, https://CRAN.R-project.org/package=ef.

Corresponding BibTeX entry:

  @Manual{,
    title = {ef: Modelling Framework for the Estimation of Salmonid
      Abundance},
    author = {Colin Millar and Rob Fryer and Iain Malcolm and Ross
      Glover},
    year = {2020},
    note = {R package version 1.2.0},
    url = {https://CRAN.R-project.org/package=ef},
  }