To cite package ‘ecotoxicology’ in publications use:

Gama J (2015). ecotoxicology: Methods for Ecotoxicology. R package version 1.0.1, https://CRAN.R-project.org/package=ecotoxicology.

Corresponding BibTeX entry:

  @Manual{,
    title = {ecotoxicology: Methods for Ecotoxicology},
    author = {Jose Gama},
    year = {2015},
    note = {R package version 1.0.1},
    url = {https://CRAN.R-project.org/package=ecotoxicology},
  }