| APA | ZD. (2012, February 14). In Acronym Geek. Retrieved 06:09, February 14, 2012, from http://www.acronymgeek.com/ZD |
| MLA | "ZD." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ZD>. |
| MHRA | 'ZD', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ZD> [accessed 14 February 2012] |
| Chicago | "ZD", http://www.acronymgeek.com/ZD (accessed February 14, 2012). |
| CBE/CSE | ZD [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ZD. |
| Bluebook | ZD, http://www.acronymgeek.com/ZD (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZD, http://www.acronymgeek.com/ZD (optional description here) (as of Feb. 14, 2012, 06:09). |
| AMA | ZD. Acronym Geek. February 14, 2012, 06:09. Available at: http://www.acronymgeek.com/ZD. Accessed February 14, 2012, 06:09. |