| APA | ZTM. (2012, February 13). In Acronym Geek. Retrieved 21:23, February 13, 2012, from http://www.acronymgeek.com/ZTM |
| MLA | "ZTM." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/ZTM>. |
| MHRA | 'ZTM', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/ZTM> [accessed 13 February 2012] |
| Chicago | "ZTM", http://www.acronymgeek.com/ZTM (accessed February 13, 2012). |
| CBE/CSE | ZTM [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/ZTM. |
| Bluebook | ZTM, http://www.acronymgeek.com/ZTM (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZTM, http://www.acronymgeek.com/ZTM (optional description here) (as of Feb. 13, 2012, 21:23). |
| AMA | ZTM. Acronym Geek. February 13, 2012, 21:23. Available at: http://www.acronymgeek.com/ZTM. Accessed February 13, 2012, 21:23. |