| APA | ZDSO. (2012, February 15). In Acronym Geek. Retrieved 14:16, February 15, 2012, from http://www.acronymgeek.com/ZDSO |
| MLA | "ZDSO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ZDSO>. |
| MHRA | 'ZDSO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ZDSO> [accessed 15 February 2012] |
| Chicago | "ZDSO", http://www.acronymgeek.com/ZDSO (accessed February 15, 2012). |
| CBE/CSE | ZDSO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ZDSO. |
| Bluebook | ZDSO, http://www.acronymgeek.com/ZDSO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZDSO, http://www.acronymgeek.com/ZDSO (optional description here) (as of Feb. 15, 2012, 14:16). |
| AMA | ZDSO. Acronym Geek. February 15, 2012, 14:16. Available at: http://www.acronymgeek.com/ZDSO. Accessed February 15, 2012, 14:16. |