To cite package ‘pcmtools’ in publications use:

  Gearty W (2019). _pcmtools: Tools for Phylogenetic Comparative
  Methods_. R package version 0.0.4.0,
  <https://github.com/willgearty/pcmtools>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pcmtools: Tools for Phylogenetic Comparative Methods},
    author = {William Gearty},
    year = {2019},
    note = {R package version 0.0.4.0},
    url = {https://github.com/willgearty/pcmtools},
  }