| APA | URDY. (2012, February 15). In Acronym Geek. Retrieved 22:54, February 15, 2012, from http://www.acronymgeek.com/URDY |
| MLA | "URDY." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/URDY>. |
| MHRA | 'URDY', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/URDY> [accessed 15 February 2012] |
| Chicago | "URDY", http://www.acronymgeek.com/URDY (accessed February 15, 2012). |
| CBE/CSE | URDY [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/URDY. |
| Bluebook | URDY, http://www.acronymgeek.com/URDY (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, URDY, http://www.acronymgeek.com/URDY (optional description here) (as of Feb. 15, 2012, 22:54). |
| AMA | URDY. Acronym Geek. February 15, 2012, 22:54. Available at: http://www.acronymgeek.com/URDY. Accessed February 15, 2012, 22:54. |