| APA | CKU. (2012, February 14). In Acronym Geek. Retrieved 07:46, February 14, 2012, from http://www.acronymgeek.com/CKU |
| MLA | "CKU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/CKU>. |
| MHRA | 'CKU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/CKU> [accessed 14 February 2012] |
| Chicago | "CKU", http://www.acronymgeek.com/CKU (accessed February 14, 2012). |
| CBE/CSE | CKU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/CKU. |
| Bluebook | CKU, http://www.acronymgeek.com/CKU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CKU, http://www.acronymgeek.com/CKU (optional description here) (as of Feb. 14, 2012, 07:46). |
| AMA | CKU. Acronym Geek. February 14, 2012, 07:46. Available at: http://www.acronymgeek.com/CKU. Accessed February 14, 2012, 07:46. |