To cite package ‘directotree’ in publications use:

Sirugue L (2018). directotree: Creates an Interactive Tree Structure of a Directory. R package version 1.0.0, https://github.com/louissirugue/directotree.

Corresponding BibTeX entry:

  @Manual{,
    title = {directotree: Creates an Interactive Tree Structure of a
      Directory},
    author = {Louis Sirugue},
    year = {2018},
    note = {R package version 1.0.0},
    url = {https://github.com/louissirugue/directotree},
  }