To cite pcev in publications use:

  Oros Klein, K. et al. funtooNorm: an R package for normalization of
  DNA methylation data when there are multiple cell or tissue types

A BibTeX entry for LaTeX users is

  @Article{,
    title = {funtooNorm: an R package for normalization of DNA methylation data when there are multiple cell or tissue types},
    author = {Oros Klein and {K.} and {Grinek} and {S.} and {Bernatsky} and {S} and {Bouchard} and {L} and {Ciampi} and {A} and {Colmegna} and {I} and {Fortin} and J. P. and {Gao} and {L} and Celia M.T. Greenwood},
    journal = {Bioinformatics},
    year = {2016},
    volume = {32},
    number = {4},
    pages = {593-5},
    url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4743629/},
  }