| APA | ZRRK. (2012, February 16). In Acronym Geek. Retrieved 05:44, February 16, 2012, from http://www.acronymgeek.com/ZRRK |
| MLA | "ZRRK." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/ZRRK>. |
| MHRA | 'ZRRK', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/ZRRK> [accessed 16 February 2012] |
| Chicago | "ZRRK", http://www.acronymgeek.com/ZRRK (accessed February 16, 2012). |
| CBE/CSE | ZRRK [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/ZRRK. |
| Bluebook | ZRRK, http://www.acronymgeek.com/ZRRK (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZRRK, http://www.acronymgeek.com/ZRRK (optional description here) (as of Feb. 16, 2012, 05:44). |
| AMA | ZRRK. Acronym Geek. February 16, 2012, 05:44. Available at: http://www.acronymgeek.com/ZRRK. Accessed February 16, 2012, 05:44. |