| APA | CFK. (2012, February 14). In Acronym Geek. Retrieved 11:38, February 14, 2012, from http://www.acronymgeek.com/CFK |
| MLA | "CFK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/CFK>. |
| MHRA | 'CFK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/CFK> [accessed 14 February 2012] |
| Chicago | "CFK", http://www.acronymgeek.com/CFK (accessed February 14, 2012). |
| CBE/CSE | CFK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/CFK. |
| Bluebook | CFK, http://www.acronymgeek.com/CFK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CFK, http://www.acronymgeek.com/CFK (optional description here) (as of Feb. 14, 2012, 11:38). |
| AMA | CFK. Acronym Geek. February 14, 2012, 11:38. Available at: http://www.acronymgeek.com/CFK. Accessed February 14, 2012, 11:38. |