To cite in a publication please use:

  M. R. Smith (2016). TotalCopheneticIndex: an R package to quantify
  tree balance. Zenodo, doi: 10.5281/zenodo.1068973

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {TotalCopheneticIndex: an R package to quantify tree balance},
    author = {Martin R. Smith},
    year = {2016},
    note = {R package version 2.0.1},
    journal = {Zenodo},
    doi = {10.5281/zenodo.1068973},
  }