| APA | UDTL. (2012, February 17). In Acronym Geek. Retrieved 02:21, February 17, 2012, from http://www.acronymgeek.com/UDTL |
| MLA | "UDTL." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/UDTL>. |
| MHRA | 'UDTL', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/UDTL> [accessed 17 February 2012] |
| Chicago | "UDTL", http://www.acronymgeek.com/UDTL (accessed February 17, 2012). |
| CBE/CSE | UDTL [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/UDTL. |
| Bluebook | UDTL, http://www.acronymgeek.com/UDTL (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UDTL, http://www.acronymgeek.com/UDTL (optional description here) (as of Feb. 17, 2012, 02:21). |
| AMA | UDTL. Acronym Geek. February 17, 2012, 02:21. Available at: http://www.acronymgeek.com/UDTL. Accessed February 17, 2012, 02:21. |