| APA | UDSY. (2012, February 14). In Acronym Geek. Retrieved 23:33, February 14, 2012, from http://www.acronymgeek.com/UDSY |
| MLA | "UDSY." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/UDSY>. |
| MHRA | 'UDSY', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/UDSY> [accessed 14 February 2012] |
| Chicago | "UDSY", http://www.acronymgeek.com/UDSY (accessed February 14, 2012). |
| CBE/CSE | UDSY [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/UDSY. |
| Bluebook | UDSY, http://www.acronymgeek.com/UDSY (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UDSY, http://www.acronymgeek.com/UDSY (optional description here) (as of Feb. 14, 2012, 23:33). |
| AMA | UDSY. Acronym Geek. February 14, 2012, 23:33. Available at: http://www.acronymgeek.com/UDSY. Accessed February 14, 2012, 23:33. |