To cite package ‘collections’ in publications use:

  Lai R (2026). _collections: High Performance Container Data Types_. R
  package version 0.3.12, <https://github.com/randy3k/collections>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {collections: High Performance Container Data Types},
    author = {Randy Lai},
    year = {2026},
    note = {R package version 0.3.12},
    url = {https://github.com/randy3k/collections},
  }