| APA | CTU. (2012, February 14). In Acronym Geek. Retrieved 06:42, February 14, 2012, from http://www.acronymgeek.com/CTU |
| MLA | "CTU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/CTU>. |
| MHRA | 'CTU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/CTU> [accessed 14 February 2012] |
| Chicago | "CTU", http://www.acronymgeek.com/CTU (accessed February 14, 2012). |
| CBE/CSE | CTU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/CTU. |
| Bluebook | CTU, http://www.acronymgeek.com/CTU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CTU, http://www.acronymgeek.com/CTU (optional description here) (as of Feb. 14, 2012, 06:42). |
| AMA | CTU. Acronym Geek. February 14, 2012, 06:42. Available at: http://www.acronymgeek.com/CTU. Accessed February 14, 2012, 06:42. |