| APA | ZIRS. (2012, February 15). In Acronym Geek. Retrieved 02:03, February 15, 2012, from http://www.acronymgeek.com/ZIRS |
| MLA | "ZIRS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ZIRS>. |
| MHRA | 'ZIRS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ZIRS> [accessed 15 February 2012] |
| Chicago | "ZIRS", http://www.acronymgeek.com/ZIRS (accessed February 15, 2012). |
| CBE/CSE | ZIRS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ZIRS. |
| Bluebook | ZIRS, http://www.acronymgeek.com/ZIRS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZIRS, http://www.acronymgeek.com/ZIRS (optional description here) (as of Feb. 15, 2012, 02:03). |
| AMA | ZIRS. Acronym Geek. February 15, 2012, 02:03. Available at: http://www.acronymgeek.com/ZIRS. Accessed February 15, 2012, 02:03. |