| APA | ZRR. (2012, February 14). In Acronym Geek. Retrieved 20:43, February 14, 2012, from http://www.acronymgeek.com/ZRR |
| MLA | "ZRR." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ZRR>. |
| MHRA | 'ZRR', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ZRR> [accessed 14 February 2012] |
| Chicago | "ZRR", http://www.acronymgeek.com/ZRR (accessed February 14, 2012). |
| CBE/CSE | ZRR [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ZRR. |
| Bluebook | ZRR, http://www.acronymgeek.com/ZRR (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZRR, http://www.acronymgeek.com/ZRR (optional description here) (as of Feb. 14, 2012, 20:43). |
| AMA | ZRR. Acronym Geek. February 14, 2012, 20:43. Available at: http://www.acronymgeek.com/ZRR. Accessed February 14, 2012, 20:43. |