To cite mplot in publications use:

  Tarr G, Müller S, Welsh AH (2018). “mplot: An R Package for Graphical
  Model Stability and Variable Selection Procedures.” _Journal of
  Statistical Software_, *83*(9), 1-28. doi:10.18637/jss.v083.i09
  <https://doi.org/10.18637/jss.v083.i09>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {{mplot}: An {R} Package for Graphical Model Stability and Variable Selection Procedures},
    author = {Garth Tarr and Samuel M{\"u}ller and Alan H. Welsh},
    journal = {Journal of Statistical Software},
    year = {2018},
    volume = {83},
    number = {9},
    pages = {1--28},
    doi = {10.18637/jss.v083.i09},
  }