| APA | DDM. (2012, February 7). In Acronym Geek. Retrieved 22:45, February 7, 2012, from http://www.acronymgeek.com/DDM |
| MLA | "DDM." Acronym Geek. (2012). Acronym Geek. 7 Feb 2012 <http://www.acronymgeek.com/DDM>. |
| MHRA | 'DDM', Acronym Geek, 7 February 2012, <http://www.acronymgeek.com/DDM> [accessed 7 February 2012] |
| Chicago | "DDM", http://www.acronymgeek.com/DDM (accessed February 7, 2012). |
| CBE/CSE | DDM [Internet]. Acronym Geek; 2012 Feb 7 [cited 2012 Feb 7]. Available from: http://www.acronymgeek.com/DDM. |
| Bluebook | DDM, http://www.acronymgeek.com/DDM (last visited February 7, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDM, http://www.acronymgeek.com/DDM (optional description here) (as of Feb. 7, 2012, 22:45). |
| AMA | DDM. Acronym Geek. February 7, 2012, 22:45. Available at: http://www.acronymgeek.com/DDM. Accessed February 7, 2012, 22:45. |