To cite mboxr in publications use:

Seo J, Choi S (2019). mboxr: Reading, Extracting, and Converting an Mbox File into a Tibble. R package version 0.2.0, https://CRAN.R-project.org/package=mboxr.

Corresponding BibTeX entry:

  @Manual{,
    title = {mboxr: Reading, Extracting, and Converting an Mbox File
      into a Tibble},
    author = {JooYoung Seo and Soyoung Choi},
    year = {2019},
    note = {R package version 0.2.0},
    url = {https://CRAN.R-project.org/package=mboxr},
  }