| APA | SDA. (2012, February 14). In Acronym Geek. Retrieved 20:49, February 14, 2012, from http://www.acronymgeek.com/SDA |
| MLA | "SDA." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/SDA>. |
| MHRA | 'SDA', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/SDA> [accessed 14 February 2012] |
| Chicago | "SDA", http://www.acronymgeek.com/SDA (accessed February 14, 2012). |
| CBE/CSE | SDA [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/SDA. |
| Bluebook | SDA, http://www.acronymgeek.com/SDA (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDA, http://www.acronymgeek.com/SDA (optional description here) (as of Feb. 14, 2012, 20:49). |
| AMA | SDA. Acronym Geek. February 14, 2012, 20:49. Available at: http://www.acronymgeek.com/SDA. Accessed February 14, 2012, 20:49. |