| APA | UDHH. (2012, February 16). In Acronym Geek. Retrieved 00:54, February 16, 2012, from http://www.acronymgeek.com/UDHH |
| MLA | "UDHH." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/UDHH>. |
| MHRA | 'UDHH', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/UDHH> [accessed 16 February 2012] |
| Chicago | "UDHH", http://www.acronymgeek.com/UDHH (accessed February 16, 2012). |
| CBE/CSE | UDHH [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/UDHH. |
| Bluebook | UDHH, http://www.acronymgeek.com/UDHH (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UDHH, http://www.acronymgeek.com/UDHH (optional description here) (as of Feb. 16, 2012, 00:54). |
| AMA | UDHH. Acronym Geek. February 16, 2012, 00:54. Available at: http://www.acronymgeek.com/UDHH. Accessed February 16, 2012, 00:54. |