To cite package ‘dendroextras’ in publications use:

Jefferis G (2018). dendroextras: Extra Functions to Cut, Label and Colour Dendrogram Clusters. R package version 0.2.3, https://github.com/jefferis/dendroextras.

Corresponding BibTeX entry:

  @Manual{,
    title = {dendroextras: Extra Functions to Cut, Label and Colour
      Dendrogram Clusters},
    author = {Gregory Jefferis},
    year = {2018},
    note = {R package version 0.2.3},
    url = {https://github.com/jefferis/dendroextras},
  }