| APA | UDHL. (2012, February 16). In Acronym Geek. Retrieved 23:22, February 16, 2012, from http://www.acronymgeek.com/UDHL |
| MLA | "UDHL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/UDHL>. |
| MHRA | 'UDHL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/UDHL> [accessed 16 February 2012] |
| Chicago | "UDHL", http://www.acronymgeek.com/UDHL (accessed February 16, 2012). |
| CBE/CSE | UDHL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/UDHL. |
| Bluebook | UDHL, http://www.acronymgeek.com/UDHL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UDHL, http://www.acronymgeek.com/UDHL (optional description here) (as of Feb. 16, 2012, 23:22). |
| AMA | UDHL. Acronym Geek. February 16, 2012, 23:22. Available at: http://www.acronymgeek.com/UDHL. Accessed February 16, 2012, 23:22. |