| APA | UDHI. (2012, February 14). In Acronym Geek. Retrieved 13:44, February 14, 2012, from http://www.acronymgeek.com/UDHI |
| MLA | "UDHI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/UDHI>. |
| MHRA | 'UDHI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/UDHI> [accessed 14 February 2012] |
| Chicago | "UDHI", http://www.acronymgeek.com/UDHI (accessed February 14, 2012). |
| CBE/CSE | UDHI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/UDHI. |
| Bluebook | UDHI, http://www.acronymgeek.com/UDHI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UDHI, http://www.acronymgeek.com/UDHI (optional description here) (as of Feb. 14, 2012, 13:44). |
| AMA | UDHI. Acronym Geek. February 14, 2012, 13:44. Available at: http://www.acronymgeek.com/UDHI. Accessed February 14, 2012, 13:44. |