| APA | CIOO. (2012, February 16). In Acronym Geek. Retrieved 02:47, February 16, 2012, from http://www.acronymgeek.com/CIOO |
| MLA | "CIOO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/CIOO>. |
| MHRA | 'CIOO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/CIOO> [accessed 16 February 2012] |
| Chicago | "CIOO", http://www.acronymgeek.com/CIOO (accessed February 16, 2012). |
| CBE/CSE | CIOO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/CIOO. |
| Bluebook | CIOO, http://www.acronymgeek.com/CIOO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CIOO, http://www.acronymgeek.com/CIOO (optional description here) (as of Feb. 16, 2012, 02:47). |
| AMA | CIOO. Acronym Geek. February 16, 2012, 02:47. Available at: http://www.acronymgeek.com/CIOO. Accessed February 16, 2012, 02:47. |