| APA | CCTO. (2012, February 15). In Acronym Geek. Retrieved 17:24, February 15, 2012, from http://www.acronymgeek.com/CCTO |
| MLA | "CCTO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/CCTO>. |
| MHRA | 'CCTO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/CCTO> [accessed 15 February 2012] |
| Chicago | "CCTO", http://www.acronymgeek.com/CCTO (accessed February 15, 2012). |
| CBE/CSE | CCTO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/CCTO. |
| Bluebook | CCTO, http://www.acronymgeek.com/CCTO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CCTO, http://www.acronymgeek.com/CCTO (optional description here) (as of Feb. 15, 2012, 17:24). |
| AMA | CCTO. Acronym Geek. February 15, 2012, 17:24. Available at: http://www.acronymgeek.com/CCTO. Accessed February 15, 2012, 17:24. |