| APA | OCNO. (2012, February 16). In Acronym Geek. Retrieved 02:24, February 16, 2012, from http://www.acronymgeek.com/OCNO |
| MLA | "OCNO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OCNO>. |
| MHRA | 'OCNO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OCNO> [accessed 16 February 2012] |
| Chicago | "OCNO", http://www.acronymgeek.com/OCNO (accessed February 16, 2012). |
| CBE/CSE | OCNO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OCNO. |
| Bluebook | OCNO, http://www.acronymgeek.com/OCNO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OCNO, http://www.acronymgeek.com/OCNO (optional description here) (as of Feb. 16, 2012, 02:24). |
| AMA | OCNO. Acronym Geek. February 16, 2012, 02:24. Available at: http://www.acronymgeek.com/OCNO. Accessed February 16, 2012, 02:24. |