To cite the adehabitatHS package in publications use:

Calenge C (2006). “The package adehabitat for the R software: tool for the analysis of space and habitat use by animals.” Ecological Modelling, 197, 1035.

Corresponding BibTeX entry:

  @Article{,
    title = {The package adehabitat for the R software: tool for the
      analysis of space and habitat use by animals},
    journal = {Ecological Modelling},
    volume = {197},
    pages = {1035},
    year = {2006},
    author = {C. Calenge},
  }