To cite package 'aod' in publications use:

  Lesnoff, M., Lancelot, R. (2012). aod: Analysis of Overdispersed
  Data. R package version 1.3.3, URL
  http://cran.r-project.org/package=aod

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {aod: Analysis of Overdispersed Data},
    author = {{Lesnoff} and {M.} and {Lancelot} and {R.}},
    year = {2012},
    note = {R package version 1.3.3},
    url = {https://cran.r-project.org/package=aod},
  }