| APA | CRDK. (2012, February 16). In Acronym Geek. Retrieved 04:22, February 16, 2012, from http://www.acronymgeek.com/CRDK |
| MLA | "CRDK." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/CRDK>. |
| MHRA | 'CRDK', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/CRDK> [accessed 16 February 2012] |
| Chicago | "CRDK", http://www.acronymgeek.com/CRDK (accessed February 16, 2012). |
| CBE/CSE | CRDK [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/CRDK. |
| Bluebook | CRDK, http://www.acronymgeek.com/CRDK (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CRDK, http://www.acronymgeek.com/CRDK (optional description here) (as of Feb. 16, 2012, 04:22). |
| AMA | CRDK. Acronym Geek. February 16, 2012, 04:22. Available at: http://www.acronymgeek.com/CRDK. Accessed February 16, 2012, 04:22. |