To cite package ‘designmatch’ in publications use:

  Zubizarreta J, Kilcioglu C, Vielma J, Cohn E (2026). _designmatch:
  Matched Samples that are Balanced and Representative by Design_. R
  package version 0.5.5,
  <https://github.com/jrzubizarreta/designmatch>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {designmatch: Matched Samples that are Balanced and Representative by Design},
    author = {Jose R. Zubizarreta and Cinar Kilcioglu and Juan P. Vielma and Eric R. Cohn},
    year = {2026},
    note = {R package version 0.5.5},
    url = {https://github.com/jrzubizarreta/designmatch},
  }