To cite package ‘mod’ in publications use:

Zhang S (2019). mod: Lightweight and Self-Contained Modules for Code Organization. R package version 0.1.4.9000, https://github.com/iqis/mod.

Corresponding BibTeX entry:

  @Manual{,
    title = {mod: Lightweight and Self-Contained Modules for Code
      Organization},
    author = {Siqi Zhang},
    year = {2019},
    note = {R package version 0.1.4.9000},
    url = {https://github.com/iqis/mod},
  }