| APA | CIAO. (2012, February 10). In Acronym Geek. Retrieved 11:32, February 10, 2012, from http://www.acronymgeek.com/CIAO |
| MLA | "CIAO." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/CIAO>. |
| MHRA | 'CIAO', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/CIAO> [accessed 10 February 2012] |
| Chicago | "CIAO", http://www.acronymgeek.com/CIAO (accessed February 10, 2012). |
| CBE/CSE | CIAO [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/CIAO. |
| Bluebook | CIAO, http://www.acronymgeek.com/CIAO (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CIAO, http://www.acronymgeek.com/CIAO (optional description here) (as of Feb. 10, 2012, 11:32). |
| AMA | CIAO. Acronym Geek. February 10, 2012, 11:32. Available at: http://www.acronymgeek.com/CIAO. Accessed February 10, 2012, 11:32. |