| APA | DDRS. (2012, February 16). In Acronym Geek. Retrieved 05:10, February 16, 2012, from http://www.acronymgeek.com/DDRS |
| MLA | "DDRS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/DDRS>. |
| MHRA | 'DDRS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/DDRS> [accessed 16 February 2012] |
| Chicago | "DDRS", http://www.acronymgeek.com/DDRS (accessed February 16, 2012). |
| CBE/CSE | DDRS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/DDRS. |
| Bluebook | DDRS, http://www.acronymgeek.com/DDRS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDRS, http://www.acronymgeek.com/DDRS (optional description here) (as of Feb. 16, 2012, 05:10). |
| AMA | DDRS. Acronym Geek. February 16, 2012, 05:10. Available at: http://www.acronymgeek.com/DDRS. Accessed February 16, 2012, 05:10. |