| APA | ONPN. (2012, February 15). In Acronym Geek. Retrieved 15:42, February 15, 2012, from http://www.acronymgeek.com/ONPN |
| MLA | "ONPN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ONPN>. |
| MHRA | 'ONPN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ONPN> [accessed 15 February 2012] |
| Chicago | "ONPN", http://www.acronymgeek.com/ONPN (accessed February 15, 2012). |
| CBE/CSE | ONPN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ONPN. |
| Bluebook | ONPN, http://www.acronymgeek.com/ONPN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ONPN, http://www.acronymgeek.com/ONPN (optional description here) (as of Feb. 15, 2012, 15:42). |
| AMA | ONPN. Acronym Geek. February 15, 2012, 15:42. Available at: http://www.acronymgeek.com/ONPN. Accessed February 15, 2012, 15:42. |