| APA | ZIRG. (2012, February 17). In Acronym Geek. Retrieved 06:39, February 17, 2012, from http://www.acronymgeek.com/ZIRG |
| MLA | "ZIRG." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ZIRG>. |
| MHRA | 'ZIRG', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ZIRG> [accessed 17 February 2012] |
| Chicago | "ZIRG", http://www.acronymgeek.com/ZIRG (accessed February 17, 2012). |
| CBE/CSE | ZIRG [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ZIRG. |
| Bluebook | ZIRG, http://www.acronymgeek.com/ZIRG (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZIRG, http://www.acronymgeek.com/ZIRG (optional description here) (as of Feb. 17, 2012, 06:39). |
| AMA | ZIRG. Acronym Geek. February 17, 2012, 06:39. Available at: http://www.acronymgeek.com/ZIRG. Accessed February 17, 2012, 06:39. |