| APA | NPOS. (2012, February 14). In Acronym Geek. Retrieved 17:48, February 14, 2012, from http://www.acronymgeek.com/NPOS |
| MLA | "NPOS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/NPOS>. |
| MHRA | 'NPOS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/NPOS> [accessed 14 February 2012] |
| Chicago | "NPOS", http://www.acronymgeek.com/NPOS (accessed February 14, 2012). |
| CBE/CSE | NPOS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/NPOS. |
| Bluebook | NPOS, http://www.acronymgeek.com/NPOS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NPOS, http://www.acronymgeek.com/NPOS (optional description here) (as of Feb. 14, 2012, 17:48). |
| AMA | NPOS. Acronym Geek. February 14, 2012, 17:48. Available at: http://www.acronymgeek.com/NPOS. Accessed February 14, 2012, 17:48. |