| APA | CHOK. (2012, February 12). In Acronym Geek. Retrieved 01:16, February 12, 2012, from http://www.acronymgeek.com/CHOK |
| MLA | "CHOK." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/CHOK>. |
| MHRA | 'CHOK', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/CHOK> [accessed 12 February 2012] |
| Chicago | "CHOK", http://www.acronymgeek.com/CHOK (accessed February 12, 2012). |
| CBE/CSE | CHOK [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/CHOK. |
| Bluebook | CHOK, http://www.acronymgeek.com/CHOK (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CHOK, http://www.acronymgeek.com/CHOK (optional description here) (as of Feb. 12, 2012, 01:16). |
| AMA | CHOK. Acronym Geek. February 12, 2012, 01:16. Available at: http://www.acronymgeek.com/CHOK. Accessed February 12, 2012, 01:16. |