To cite the lsr package in publications use:

Navarro, D. J. (2013) Learning statistics with R: A tutorial for psychology students and other beginners. University of Adelaide. Adelaide, Australia

Corresponding BibTeX entry:

  @Manual{,
    title = {Learning statistics with R: A tutorial for psychology
      students and other beginners},
    author = {Daniel Navarro},
    organization = {University of Adelaide},
    address = {Adelaide, Australia},
    year = {2013},
    note = {R package version 0.2.3},
  }