| APA | PORF. (2012, February 16). In Acronym Geek. Retrieved 21:38, February 16, 2012, from http://www.acronymgeek.com/PORF |
| MLA | "PORF." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PORF>. |
| MHRA | 'PORF', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PORF> [accessed 16 February 2012] |
| Chicago | "PORF", http://www.acronymgeek.com/PORF (accessed February 16, 2012). |
| CBE/CSE | PORF [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PORF. |
| Bluebook | PORF, http://www.acronymgeek.com/PORF (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PORF, http://www.acronymgeek.com/PORF (optional description here) (as of Feb. 16, 2012, 21:38). |
| AMA | PORF. Acronym Geek. February 16, 2012, 21:38. Available at: http://www.acronymgeek.com/PORF. Accessed February 16, 2012, 21:38. |