To cite package ‘Fletcher2013b’ in publications use:

  Michael NC Fletcher, Mauro AA Castro, Suet-Feung Chin, Oscar Rueda,
  Xin Wang, Carlos Caldas, Bruce AJ Ponder, Florian Markowetz, Kerstin
  B Meyer. Master regulators of FGFR2 signalling and breast cancer
  risk. Nature Communications, 4:2464, 2013.

A BibTeX entry for LaTeX users is

  @Article{,
    author = {Michael Fletcher and Mauro Castro and Xin Wang and Ines {de Santiago} and Martin O'Reilly and Suet-Feung Chin and Oscar Rueda and Carlos Caldas and Bruce Ponder and Florian Markowetz and Kerstin Meyer},
    title = {Master regulators of FGFR2 signalling and breast cancer risk.},
    journal = {Nature Communications},
    year = {2013},
    volume = {4},
    pages = {2464},
    doi = {10.1038/ncomms3464},
  }