| APA | PVNF. (2012, February 15). In Acronym Geek. Retrieved 17:45, February 15, 2012, from http://www.acronymgeek.com/PVNF |
| MLA | "PVNF." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PVNF>. |
| MHRA | 'PVNF', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PVNF> [accessed 15 February 2012] |
| Chicago | "PVNF", http://www.acronymgeek.com/PVNF (accessed February 15, 2012). |
| CBE/CSE | PVNF [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PVNF. |
| Bluebook | PVNF, http://www.acronymgeek.com/PVNF (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PVNF, http://www.acronymgeek.com/PVNF (optional description here) (as of Feb. 15, 2012, 17:45). |
| AMA | PVNF. Acronym Geek. February 15, 2012, 17:45. Available at: http://www.acronymgeek.com/PVNF. Accessed February 15, 2012, 17:45. |