| APA | DDRD. (2012, February 15). In Acronym Geek. Retrieved 05:49, February 15, 2012, from http://www.acronymgeek.com/DDRD |
| MLA | "DDRD." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DDRD>. |
| MHRA | 'DDRD', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DDRD> [accessed 15 February 2012] |
| Chicago | "DDRD", http://www.acronymgeek.com/DDRD (accessed February 15, 2012). |
| CBE/CSE | DDRD [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DDRD. |
| Bluebook | DDRD, http://www.acronymgeek.com/DDRD (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDRD, http://www.acronymgeek.com/DDRD (optional description here) (as of Feb. 15, 2012, 05:49). |
| AMA | DDRD. Acronym Geek. February 15, 2012, 05:49. Available at: http://www.acronymgeek.com/DDRD. Accessed February 15, 2012, 05:49. |