To cite package ‘R4RNA’ in publications use:

  Lai D, Proctor JR, Zhu JA, Meyer IM (2012). “R-chie: a web server and
  R package for visualizing RNA secondary structures.” _Nucleic Acids
  Research_, *40*(12), e95. <http://dx.doi.org/10.1093/nar/gks241>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {R-chie: a web server and R package for visualizing RNA secondary
        structures},
    author = {Daniel Lai and Jeff Ryan Proctor and Jing Yun Alice Zhu and Irmtraud Margret Meyer},
    journal = {Nucleic Acids Research},
    volume = {40},
    number = {12},
    pages = {e95},
    year = {2012},
    url = {http://dx.doi.org/10.1093/nar/gks241},
  }