| APA | SDDR. (2012, February 16). In Acronym Geek. Retrieved 10:40, February 16, 2012, from http://www.acronymgeek.com/SDDR |
| MLA | "SDDR." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SDDR>. |
| MHRA | 'SDDR', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SDDR> [accessed 16 February 2012] |
| Chicago | "SDDR", http://www.acronymgeek.com/SDDR (accessed February 16, 2012). |
| CBE/CSE | SDDR [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SDDR. |
| Bluebook | SDDR, http://www.acronymgeek.com/SDDR (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDDR, http://www.acronymgeek.com/SDDR (optional description here) (as of Feb. 16, 2012, 10:40). |
| AMA | SDDR. Acronym Geek. February 16, 2012, 10:40. Available at: http://www.acronymgeek.com/SDDR. Accessed February 16, 2012, 10:40. |