To cite package ‘lenses’ in publications use:

Hammill C, Darwin B (2019). lenses: Elegant Data Manipulation with Lenses. R package version 0.0.3, https://github.com/cfhammill/lenses.

Corresponding BibTeX entry:

  @Manual{,
    title = {lenses: Elegant Data Manipulation with Lenses},
    author = {Chris Hammill and Ben Darwin},
    year = {2019},
    note = {R package version 0.0.3},
    url = {https://github.com/cfhammill/lenses},
  }