To cite the 'ramwas' package in publications use:

  Andrey A. Shabalin, Mohammad W. Hattab, Shaunna L. Clark, Robin F.
  Chan, Gaurav Kumar, Karolina A. Aberg, and Edwin J.C.G. van den Oord.
  RaMWAS: fast methylome-wide association study pipeline for enrichment
  platforms, Bioinformatics 2018,
  http://dx.doi.org/10.1093/bioinformatics/bty069

A BibTeX entry for LaTeX users is

  @Article{,
    title = {{RaMWAS}: fast methylome-wide association study pipeline for enrichment platforms},
    author = {Andrey A Shabalin and Mohammad W Hattab and Shaunna L Clark and Robin F Chan and Gaurav Kumar and Karolina A Aberg and Edwin JCG {van den Oord}},
    year = {2018},
    url = {http://dx.doi.org/10.1093/bioinformatics/bty069},
    publisher = {Oxford University Press},
    journal = {Bioinformatics},
  }