| APA | CAO. (2012, February 9). In Acronym Geek. Retrieved 01:05, February 9, 2012, from http://www.acronymgeek.com/CAO |
| MLA | "CAO." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/CAO>. |
| MHRA | 'CAO', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/CAO> [accessed 9 February 2012] |
| Chicago | "CAO", http://www.acronymgeek.com/CAO (accessed February 9, 2012). |
| CBE/CSE | CAO [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/CAO. |
| Bluebook | CAO, http://www.acronymgeek.com/CAO (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CAO, http://www.acronymgeek.com/CAO (optional description here) (as of Feb. 9, 2012, 01:05). |
| AMA | CAO. Acronym Geek. February 9, 2012, 01:05. Available at: http://www.acronymgeek.com/CAO. Accessed February 9, 2012, 01:05. |