| APA | DDXD. (2012, February 16). In Acronym Geek. Retrieved 14:58, February 16, 2012, from http://www.acronymgeek.com/DDXD |
| MLA | "DDXD." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/DDXD>. |
| MHRA | 'DDXD', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/DDXD> [accessed 16 February 2012] |
| Chicago | "DDXD", http://www.acronymgeek.com/DDXD (accessed February 16, 2012). |
| CBE/CSE | DDXD [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/DDXD. |
| Bluebook | DDXD, http://www.acronymgeek.com/DDXD (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDXD, http://www.acronymgeek.com/DDXD (optional description here) (as of Feb. 16, 2012, 14:58). |
| AMA | DDXD. Acronym Geek. February 16, 2012, 14:58. Available at: http://www.acronymgeek.com/DDXD. Accessed February 16, 2012, 14:58. |