| APA | ZDRS. (2012, February 16). In Acronym Geek. Retrieved 12:56, February 16, 2012, from http://www.acronymgeek.com/ZDRS |
| MLA | "ZDRS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/ZDRS>. |
| MHRA | 'ZDRS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/ZDRS> [accessed 16 February 2012] |
| Chicago | "ZDRS", http://www.acronymgeek.com/ZDRS (accessed February 16, 2012). |
| CBE/CSE | ZDRS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/ZDRS. |
| Bluebook | ZDRS, http://www.acronymgeek.com/ZDRS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZDRS, http://www.acronymgeek.com/ZDRS (optional description here) (as of Feb. 16, 2012, 12:56). |
| AMA | ZDRS. Acronym Geek. February 16, 2012, 12:56. Available at: http://www.acronymgeek.com/ZDRS. Accessed February 16, 2012, 12:56. |