To cite package ‘MrMediation’ in publications use:

  Wang J, Lewis E, Wu Z (2022). _MrMediation: An R Package for
  Mendelian Randomization in the mediation setting_. R package version
  1.0, <https://github.com/remlapmot/mrmediation>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {MrMediation: An R Package for Mendelian Randomization in the mediation
setting},
    author = {Jingshu Wang and Ethan Lewis and Zixuan Wu},
    year = {2022},
    note = {R package version 1.0},
    url = {https://github.com/remlapmot/mrmediation},
  }