| APA | ZRDK. (2012, February 17). In Acronym Geek. Retrieved 02:04, February 17, 2012, from http://www.acronymgeek.com/ZRDK |
| MLA | "ZRDK." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ZRDK>. |
| MHRA | 'ZRDK', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ZRDK> [accessed 17 February 2012] |
| Chicago | "ZRDK", http://www.acronymgeek.com/ZRDK (accessed February 17, 2012). |
| CBE/CSE | ZRDK [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ZRDK. |
| Bluebook | ZRDK, http://www.acronymgeek.com/ZRDK (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZRDK, http://www.acronymgeek.com/ZRDK (optional description here) (as of Feb. 17, 2012, 02:04). |
| AMA | ZRDK. Acronym Geek. February 17, 2012, 02:04. Available at: http://www.acronymgeek.com/ZRDK. Accessed February 17, 2012, 02:04. |