| APA | MD.. (2012, February 11). In Acronym Geek. Retrieved 22:31, February 11, 2012, from http://www.acronymgeek.com/MD. |
| MLA | "MD.." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/MD.>. |
| MHRA | 'MD.', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/MD.> [accessed 11 February 2012] |
| Chicago | "MD.", http://www.acronymgeek.com/MD. (accessed February 11, 2012). |
| CBE/CSE | MD. [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/MD.. |
| Bluebook | MD., http://www.acronymgeek.com/MD. (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, MD., http://www.acronymgeek.com/MD. (optional description here) (as of Feb. 11, 2012, 22:31). |
| AMA | MD.. Acronym Geek. February 11, 2012, 22:31. Available at: http://www.acronymgeek.com/MD.. Accessed February 11, 2012, 22:31. |