| APA | ZTI. (2012, February 11). In Acronym Geek. Retrieved 22:59, February 11, 2012, from http://www.acronymgeek.com/ZTI |
| MLA | "ZTI." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/ZTI>. |
| MHRA | 'ZTI', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/ZTI> [accessed 11 February 2012] |
| Chicago | "ZTI", http://www.acronymgeek.com/ZTI (accessed February 11, 2012). |
| CBE/CSE | ZTI [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/ZTI. |
| Bluebook | ZTI, http://www.acronymgeek.com/ZTI (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZTI, http://www.acronymgeek.com/ZTI (optional description here) (as of Feb. 11, 2012, 22:59). |
| AMA | ZTI. Acronym Geek. February 11, 2012, 22:59. Available at: http://www.acronymgeek.com/ZTI. Accessed February 11, 2012, 22:59. |