| APA | ZRN. (2012, February 10). In Acronym Geek. Retrieved 09:41, February 10, 2012, from http://www.acronymgeek.com/ZRN |
| MLA | "ZRN." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/ZRN>. |
| MHRA | 'ZRN', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/ZRN> [accessed 10 February 2012] |
| Chicago | "ZRN", http://www.acronymgeek.com/ZRN (accessed February 10, 2012). |
| CBE/CSE | ZRN [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/ZRN. |
| Bluebook | ZRN, http://www.acronymgeek.com/ZRN (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZRN, http://www.acronymgeek.com/ZRN (optional description here) (as of Feb. 10, 2012, 09:41). |
| AMA | ZRN. Acronym Geek. February 10, 2012, 09:41. Available at: http://www.acronymgeek.com/ZRN. Accessed February 10, 2012, 09:41. |