| APA | XDO. (2012, February 13). In Acronym Geek. Retrieved 23:25, February 13, 2012, from http://www.acronymgeek.com/XDO |
| MLA | "XDO." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/XDO>. |
| MHRA | 'XDO', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/XDO> [accessed 13 February 2012] |
| Chicago | "XDO", http://www.acronymgeek.com/XDO (accessed February 13, 2012). |
| CBE/CSE | XDO [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/XDO. |
| Bluebook | XDO, http://www.acronymgeek.com/XDO (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XDO, http://www.acronymgeek.com/XDO (optional description here) (as of Feb. 13, 2012, 23:25). |
| AMA | XDO. Acronym Geek. February 13, 2012, 23:25. Available at: http://www.acronymgeek.com/XDO. Accessed February 13, 2012, 23:25. |