| APA | PNWO. (2012, February 16). In Acronym Geek. Retrieved 21:23, February 16, 2012, from http://www.acronymgeek.com/PNWO |
| MLA | "PNWO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PNWO>. |
| MHRA | 'PNWO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PNWO> [accessed 16 February 2012] |
| Chicago | "PNWO", http://www.acronymgeek.com/PNWO (accessed February 16, 2012). |
| CBE/CSE | PNWO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PNWO. |
| Bluebook | PNWO, http://www.acronymgeek.com/PNWO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNWO, http://www.acronymgeek.com/PNWO (optional description here) (as of Feb. 16, 2012, 21:23). |
| AMA | PNWO. Acronym Geek. February 16, 2012, 21:23. Available at: http://www.acronymgeek.com/PNWO. Accessed February 16, 2012, 21:23. |