| APA | HAUD. (2012, February 15). In Acronym Geek. Retrieved 16:10, February 15, 2012, from http://www.acronymgeek.com/HAUD |
| MLA | "HAUD." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HAUD>. |
| MHRA | 'HAUD', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HAUD> [accessed 15 February 2012] |
| Chicago | "HAUD", http://www.acronymgeek.com/HAUD (accessed February 15, 2012). |
| CBE/CSE | HAUD [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HAUD. |
| Bluebook | HAUD, http://www.acronymgeek.com/HAUD (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAUD, http://www.acronymgeek.com/HAUD (optional description here) (as of Feb. 15, 2012, 16:10). |
| AMA | HAUD. Acronym Geek. February 15, 2012, 16:10. Available at: http://www.acronymgeek.com/HAUD. Accessed February 15, 2012, 16:10. |