To cite package ‘cRegulome’ in publications use:

  Ahmed M, Kim DR. 2019. cRegulome: an R package for accessing microRNA
  and transcription factor-gene expression correlations in cancer.
  PeerJ 7:e6509 https://doi.org/10.7717/peerj.6509

A BibTeX entry for LaTeX users is

  @Article{,
    title = {cRegulome: an R package for accessing microRNA and transcription factor-gene expression correlations in cancer},
    author = {Mahmoud Ahmed and Deok Ryong Kim},
    year = {2019},
    journal = {PeerJ},
    doi = {10.7717/peerj.6509},
    volume = {7},
    pages = {e6509},
  }