To cite cit in publications use:

  Joshua Millstein, Gary K. Chen, Carrie V. Breton, cit: hypothesis
  testing software for mediation analysis in genomic applications,
  Bioinformatics, Volume 32, Issue 15, 1 August 2016, Pages 2364-2365,
  https://doi.org/10.1093/bioinformatics/btw135

A BibTeX entry for LaTeX users is

  @Article{,
    title = {cit: hypothesis testing software for mediation analysis in genomic applications},
    author = {Joshua Millstein and Gary Chen and Carrie Breton},
    journal = {Bioinformatics},
    year = {2016},
    month = {aug},
    volume = {32},
    issue = {15},
    doi = {10.1093/bioinformatics/btw135},
    url = {https://doi.org/10.1093/bioinformatics/btw135},
    issn = {1367-4803},
  }

Use this if you are using the CRAN version of cit:

  Millstein J (2024). _cit: Causal Inference Test_. R package version
  2.3.2, <https://cran.r-project.org/package=cit>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{{cit: Causal Inference Test}}},
    author = {Joshua Millstein},
    year = {2024},
    note = {R package version 2.3.2},
    publisher = {{CRAN}},
    url = {https://cran.r-project.org/package=cit},
  }