| APA | R4P. (2012, February 14). In Acronym Geek. Retrieved 09:03, February 14, 2012, from http://www.acronymgeek.com/R4P |
| MLA | "R4P." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/R4P>. |
| MHRA | 'R4P', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/R4P> [accessed 14 February 2012] |
| Chicago | "R4P", http://www.acronymgeek.com/R4P (accessed February 14, 2012). |
| CBE/CSE | R4P [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/R4P. |
| Bluebook | R4P, http://www.acronymgeek.com/R4P (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, R4P, http://www.acronymgeek.com/R4P (optional description here) (as of Feb. 14, 2012, 09:03). |
| AMA | R4P. Acronym Geek. February 14, 2012, 09:03. Available at: http://www.acronymgeek.com/R4P. Accessed February 14, 2012, 09:03. |