| APA | DDIS. (2012, February 15). In Acronym Geek. Retrieved 18:55, February 15, 2012, from http://www.acronymgeek.com/DDIS |
| MLA | "DDIS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DDIS>. |
| MHRA | 'DDIS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DDIS> [accessed 15 February 2012] |
| Chicago | "DDIS", http://www.acronymgeek.com/DDIS (accessed February 15, 2012). |
| CBE/CSE | DDIS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DDIS. |
| Bluebook | DDIS, http://www.acronymgeek.com/DDIS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDIS, http://www.acronymgeek.com/DDIS (optional description here) (as of Feb. 15, 2012, 18:55). |
| AMA | DDIS. Acronym Geek. February 15, 2012, 18:55. Available at: http://www.acronymgeek.com/DDIS. Accessed February 15, 2012, 18:55. |