| APA | SDM. (2012, February 13). In Acronym Geek. Retrieved 23:10, February 13, 2012, from http://www.acronymgeek.com/SDM |
| MLA | "SDM." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/SDM>. |
| MHRA | 'SDM', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/SDM> [accessed 13 February 2012] |
| Chicago | "SDM", http://www.acronymgeek.com/SDM (accessed February 13, 2012). |
| CBE/CSE | SDM [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/SDM. |
| Bluebook | SDM, http://www.acronymgeek.com/SDM (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDM, http://www.acronymgeek.com/SDM (optional description here) (as of Feb. 13, 2012, 23:10). |
| AMA | SDM. Acronym Geek. February 13, 2012, 23:10. Available at: http://www.acronymgeek.com/SDM. Accessed February 13, 2012, 23:10. |