| APA | NPOJ. (2012, February 15). In Acronym Geek. Retrieved 19:49, February 15, 2012, from http://www.acronymgeek.com/NPOJ |
| MLA | "NPOJ." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/NPOJ>. |
| MHRA | 'NPOJ', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/NPOJ> [accessed 15 February 2012] |
| Chicago | "NPOJ", http://www.acronymgeek.com/NPOJ (accessed February 15, 2012). |
| CBE/CSE | NPOJ [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/NPOJ. |
| Bluebook | NPOJ, http://www.acronymgeek.com/NPOJ (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NPOJ, http://www.acronymgeek.com/NPOJ (optional description here) (as of Feb. 15, 2012, 19:49). |
| AMA | NPOJ. Acronym Geek. February 15, 2012, 19:49. Available at: http://www.acronymgeek.com/NPOJ. Accessed February 15, 2012, 19:49. |