To cite package ‘openmpt’ in publications use:

  de Vries P (2025). _openmpt: Open 'ModPlug' Tracker Port_. R package
  version 0.1.4, <https://CRAN.R-project.org/package=openmpt>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {openmpt: Open 'ModPlug' Tracker Port},
    author = {Pepijn {de Vries}},
    year = {2025},
    note = {R package version 0.1.4},
    url = {https://CRAN.R-project.org/package=openmpt},
  }