| APA | ZIS. (2012, February 13). In Acronym Geek. Retrieved 23:43, February 13, 2012, from http://www.acronymgeek.com/ZIS |
| MLA | "ZIS." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/ZIS>. |
| MHRA | 'ZIS', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/ZIS> [accessed 13 February 2012] |
| Chicago | "ZIS", http://www.acronymgeek.com/ZIS (accessed February 13, 2012). |
| CBE/CSE | ZIS [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/ZIS. |
| Bluebook | ZIS, http://www.acronymgeek.com/ZIS (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZIS, http://www.acronymgeek.com/ZIS (optional description here) (as of Feb. 13, 2012, 23:43). |
| AMA | ZIS. Acronym Geek. February 13, 2012, 23:43. Available at: http://www.acronymgeek.com/ZIS. Accessed February 13, 2012, 23:43. |