| APA | ZDYI. (2012, February 17). In Acronym Geek. Retrieved 00:37, February 17, 2012, from http://www.acronymgeek.com/ZDYI |
| MLA | "ZDYI." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ZDYI>. |
| MHRA | 'ZDYI', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ZDYI> [accessed 17 February 2012] |
| Chicago | "ZDYI", http://www.acronymgeek.com/ZDYI (accessed February 17, 2012). |
| CBE/CSE | ZDYI [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ZDYI. |
| Bluebook | ZDYI, http://www.acronymgeek.com/ZDYI (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZDYI, http://www.acronymgeek.com/ZDYI (optional description here) (as of Feb. 17, 2012, 00:37). |
| AMA | ZDYI. Acronym Geek. February 17, 2012, 00:37. Available at: http://www.acronymgeek.com/ZDYI. Accessed February 17, 2012, 00:37. |