| APA | NPNV. (2012, February 16). In Acronym Geek. Retrieved 21:49, February 16, 2012, from http://www.acronymgeek.com/NPNV |
| MLA | "NPNV." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NPNV>. |
| MHRA | 'NPNV', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NPNV> [accessed 16 February 2012] |
| Chicago | "NPNV", http://www.acronymgeek.com/NPNV (accessed February 16, 2012). |
| CBE/CSE | NPNV [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NPNV. |
| Bluebook | NPNV, http://www.acronymgeek.com/NPNV (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NPNV, http://www.acronymgeek.com/NPNV (optional description here) (as of Feb. 16, 2012, 21:49). |
| AMA | NPNV. Acronym Geek. February 16, 2012, 21:49. Available at: http://www.acronymgeek.com/NPNV. Accessed February 16, 2012, 21:49. |