| APA | ZTLS. (2012, February 14). In Acronym Geek. Retrieved 19:46, February 14, 2012, from http://www.acronymgeek.com/ZTLS |
| MLA | "ZTLS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ZTLS>. |
| MHRA | 'ZTLS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ZTLS> [accessed 14 February 2012] |
| Chicago | "ZTLS", http://www.acronymgeek.com/ZTLS (accessed February 14, 2012). |
| CBE/CSE | ZTLS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ZTLS. |
| Bluebook | ZTLS, http://www.acronymgeek.com/ZTLS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZTLS, http://www.acronymgeek.com/ZTLS (optional description here) (as of Feb. 14, 2012, 19:46). |
| AMA | ZTLS. Acronym Geek. February 14, 2012, 19:46. Available at: http://www.acronymgeek.com/ZTLS. Accessed February 14, 2012, 19:46. |