| APA | PORP. (2012, February 11). In Acronym Geek. Retrieved 20:46, February 11, 2012, from http://www.acronymgeek.com/PORP |
| MLA | "PORP." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/PORP>. |
| MHRA | 'PORP', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/PORP> [accessed 11 February 2012] |
| Chicago | "PORP", http://www.acronymgeek.com/PORP (accessed February 11, 2012). |
| CBE/CSE | PORP [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/PORP. |
| Bluebook | PORP, http://www.acronymgeek.com/PORP (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PORP, http://www.acronymgeek.com/PORP (optional description here) (as of Feb. 11, 2012, 20:46). |
| AMA | PORP. Acronym Geek. February 11, 2012, 20:46. Available at: http://www.acronymgeek.com/PORP. Accessed February 11, 2012, 20:46. |