To cite package ‘motifbreakR’ in publications use:

  Simon G. Coetzee, Gerhard A. Coetzee and Dennis J. Hazelett (2015).
  motifbreakR: an R/Bioconductor package for predicting variant effects
  at transcription factor binding sites. Bioinformatics.
  doi:10.1093/bioinformatics/btv470

A BibTeX entry for LaTeX users is

  @Article{,
    title = {motifbreakR: an R/Bioconductor package for predicting variant effects at transcription factor binding sites},
    author = {Simon G. Coetzee and Gerhard A. Coetzee and Dennis J. Hazelett},
    year = {2015},
    journal = {Bioinformatics},
    doi = {10.1093/bioinformatics/btv470},
    url = {http://bioinformatics.oxfordjournals.org/content/early/2015/08/12/bioinformatics.btv470.abstract},
  }