| APA | CRKN. (2012, February 16). In Acronym Geek. Retrieved 02:00, February 16, 2012, from http://www.acronymgeek.com/CRKN |
| MLA | "CRKN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/CRKN>. |
| MHRA | 'CRKN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/CRKN> [accessed 16 February 2012] |
| Chicago | "CRKN", http://www.acronymgeek.com/CRKN (accessed February 16, 2012). |
| CBE/CSE | CRKN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/CRKN. |
| Bluebook | CRKN, http://www.acronymgeek.com/CRKN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CRKN, http://www.acronymgeek.com/CRKN (optional description here) (as of Feb. 16, 2012, 02:00). |
| AMA | CRKN. Acronym Geek. February 16, 2012, 02:00. Available at: http://www.acronymgeek.com/CRKN. Accessed February 16, 2012, 02:00. |