| APA | SDDE. (2012, February 16). In Acronym Geek. Retrieved 08:21, February 16, 2012, from http://www.acronymgeek.com/SDDE |
| MLA | "SDDE." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SDDE>. |
| MHRA | 'SDDE', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SDDE> [accessed 16 February 2012] |
| Chicago | "SDDE", http://www.acronymgeek.com/SDDE (accessed February 16, 2012). |
| CBE/CSE | SDDE [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SDDE. |
| Bluebook | SDDE, http://www.acronymgeek.com/SDDE (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDDE, http://www.acronymgeek.com/SDDE (optional description here) (as of Feb. 16, 2012, 08:21). |
| AMA | SDDE. Acronym Geek. February 16, 2012, 08:21. Available at: http://www.acronymgeek.com/SDDE. Accessed February 16, 2012, 08:21. |