| APA | CKSI. (2012, February 17). In Acronym Geek. Retrieved 01:56, February 17, 2012, from http://www.acronymgeek.com/CKSI |
| MLA | "CKSI." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/CKSI>. |
| MHRA | 'CKSI', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/CKSI> [accessed 17 February 2012] |
| Chicago | "CKSI", http://www.acronymgeek.com/CKSI (accessed February 17, 2012). |
| CBE/CSE | CKSI [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/CKSI. |
| Bluebook | CKSI, http://www.acronymgeek.com/CKSI (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CKSI, http://www.acronymgeek.com/CKSI (optional description here) (as of Feb. 17, 2012, 01:56). |
| AMA | CKSI. Acronym Geek. February 17, 2012, 01:56. Available at: http://www.acronymgeek.com/CKSI. Accessed February 17, 2012, 01:56. |