| APA | XDD. (2012, February 13). In Acronym Geek. Retrieved 21:40, February 13, 2012, from http://www.acronymgeek.com/XDD |
| MLA | "XDD." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/XDD>. |
| MHRA | 'XDD', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/XDD> [accessed 13 February 2012] |
| Chicago | "XDD", http://www.acronymgeek.com/XDD (accessed February 13, 2012). |
| CBE/CSE | XDD [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/XDD. |
| Bluebook | XDD, http://www.acronymgeek.com/XDD (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XDD, http://www.acronymgeek.com/XDD (optional description here) (as of Feb. 13, 2012, 21:40). |
| AMA | XDD. Acronym Geek. February 13, 2012, 21:40. Available at: http://www.acronymgeek.com/XDD. Accessed February 13, 2012, 21:40. |