To cite package ‘attrition’ in publications use:

  Coppock A, Gerber A, Green D, Kern H (2026). _attrition: Addressing
  Nonignorable Attrition with Double Sampling and Bounds_. R package
  version 1.0.0, <https://github.com/acoppock/attrition>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {attrition: Addressing Nonignorable Attrition with Double Sampling and
Bounds},
    author = {Alexander Coppock and Alan S. Gerber and Donald P. Green and Holger L. Kern},
    year = {2026},
    note = {R package version 1.0.0},
    url = {https://github.com/acoppock/attrition},
  }