To cite the adehabitatMA package in publications use:

Calenge, C. (2006) The package adehabitat for the R software: a tool for the analysis of space and habitat use by animals. Ecological Modelling, 197, 516-519

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},
  }