To cite RAppArmor in publications use:

Jeroen Ooms (2013). The RAppArmor Package: Enforcing Security Policies in R Using Dynamic Sandboxing on Linux. Journal of Statistical Software, 55(7), 1-34. URL http://www.jstatsoft.org/v55/i07/.

Corresponding BibTeX entry:

  @Article{,
    title = {The {RAppArmor} Package: Enforcing Security Policies in
      {R} Using Dynamic Sandboxing on Linux},
    author = {Jeroen Ooms},
    journal = {Journal of Statistical Software},
    year = {2013},
    volume = {55},
    number = {7},
    pages = {1--34},
    url = {http://www.jstatsoft.org/v55/i07/},
  }