| APA | UDHK. (2012, February 16). In Acronym Geek. Retrieved 17:23, February 16, 2012, from http://www.acronymgeek.com/UDHK |
| MLA | "UDHK." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/UDHK>. |
| MHRA | 'UDHK', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/UDHK> [accessed 16 February 2012] |
| Chicago | "UDHK", http://www.acronymgeek.com/UDHK (accessed February 16, 2012). |
| CBE/CSE | UDHK [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/UDHK. |
| Bluebook | UDHK, http://www.acronymgeek.com/UDHK (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UDHK, http://www.acronymgeek.com/UDHK (optional description here) (as of Feb. 16, 2012, 17:23). |
| AMA | UDHK. Acronym Geek. February 16, 2012, 17:23. Available at: http://www.acronymgeek.com/UDHK. Accessed February 16, 2012, 17:23. |