| APA | XDDN. (2012, February 17). In Acronym Geek. Retrieved 08:03, February 17, 2012, from http://www.acronymgeek.com/XDDN |
| MLA | "XDDN." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/XDDN>. |
| MHRA | 'XDDN', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/XDDN> [accessed 17 February 2012] |
| Chicago | "XDDN", http://www.acronymgeek.com/XDDN (accessed February 17, 2012). |
| CBE/CSE | XDDN [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/XDDN. |
| Bluebook | XDDN, http://www.acronymgeek.com/XDDN (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XDDN, http://www.acronymgeek.com/XDDN (optional description here) (as of Feb. 17, 2012, 08:03). |
| AMA | XDDN. Acronym Geek. February 17, 2012, 08:03. Available at: http://www.acronymgeek.com/XDDN. Accessed February 17, 2012, 08:03. |