| APA | CNO. (2012, February 9). In Acronym Geek. Retrieved 21:13, February 9, 2012, from http://www.acronymgeek.com/CNO |
| MLA | "CNO." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/CNO>. |
| MHRA | 'CNO', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/CNO> [accessed 9 February 2012] |
| Chicago | "CNO", http://www.acronymgeek.com/CNO (accessed February 9, 2012). |
| CBE/CSE | CNO [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/CNO. |
| Bluebook | CNO, http://www.acronymgeek.com/CNO (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CNO, http://www.acronymgeek.com/CNO (optional description here) (as of Feb. 9, 2012, 21:13). |
| AMA | CNO. Acronym Geek. February 9, 2012, 21:13. Available at: http://www.acronymgeek.com/CNO. Accessed February 9, 2012, 21:13. |