To cite package ‘listenv’ in publications use:

  Bengtsson H (2024). _listenv: Environments Behaving (Almost) as
  Lists_. R package version 0.9.1, ,
  <https://github.com/henrikbengtsson/listenv>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {listenv: Environments Behaving (Almost) as Lists},
    author = {Henrik Bengtsson},
    year = {2024},
    note = {R package version 0.9.1, 
},
    url = {https://github.com/henrikbengtsson/listenv},
  }