| APA | PORV. (2012, February 12). In Acronym Geek. Retrieved 10:15, February 12, 2012, from http://www.acronymgeek.com/PORV |
| MLA | "PORV." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/PORV>. |
| MHRA | 'PORV', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/PORV> [accessed 12 February 2012] |
| Chicago | "PORV", http://www.acronymgeek.com/PORV (accessed February 12, 2012). |
| CBE/CSE | PORV [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/PORV. |
| Bluebook | PORV, http://www.acronymgeek.com/PORV (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PORV, http://www.acronymgeek.com/PORV (optional description here) (as of Feb. 12, 2012, 10:15). |
| AMA | PORV. Acronym Geek. February 12, 2012, 10:15. Available at: http://www.acronymgeek.com/PORV. Accessed February 12, 2012, 10:15. |