To cite 'anominate' in publications use:

  Royce Carroll, Christopher Hare, Jeffrey B. Lewis, James Lo, Keith T.
  Poole, Howard Rosenthal, Carlos Algara, and Samuel Fuller (2024).
  alpha-NOMINATE: Ideal Point Estimator. R package version 0.7.

A BibTeX entry for LaTeX users is

  @Manual{,
    entry = {Manual},
    title = {alpha-NOMINATE: Ideal Point Estimator},
    author = {Royce Carroll and Christopher Hare and Jeffrey B. Lewis and James Lo and Keith T. Poole and Howard Rosenthal and Carlos Algara and Samuel Fuller},
    year = {2024},
    note = {R package version 0.7},
  }