| APA | DDE. (2012, February 7). In Acronym Geek. Retrieved 22:50, February 7, 2012, from http://www.acronymgeek.com/DDE |
| MLA | "DDE." Acronym Geek. (2012). Acronym Geek. 7 Feb 2012 <http://www.acronymgeek.com/DDE>. |
| MHRA | 'DDE', Acronym Geek, 7 February 2012, <http://www.acronymgeek.com/DDE> [accessed 7 February 2012] |
| Chicago | "DDE", http://www.acronymgeek.com/DDE (accessed February 7, 2012). |
| CBE/CSE | DDE [Internet]. Acronym Geek; 2012 Feb 7 [cited 2012 Feb 7]. Available from: http://www.acronymgeek.com/DDE. |
| Bluebook | DDE, http://www.acronymgeek.com/DDE (last visited February 7, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDE, http://www.acronymgeek.com/DDE (optional description here) (as of Feb. 7, 2012, 22:50). |
| AMA | DDE. Acronym Geek. February 7, 2012, 22:50. Available at: http://www.acronymgeek.com/DDE. Accessed February 7, 2012, 22:50. |