| APA | HAHD. (2012, February 16). In Acronym Geek. Retrieved 10:06, February 16, 2012, from http://www.acronymgeek.com/HAHD |
| MLA | "HAHD." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HAHD>. |
| MHRA | 'HAHD', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HAHD> [accessed 16 February 2012] |
| Chicago | "HAHD", http://www.acronymgeek.com/HAHD (accessed February 16, 2012). |
| CBE/CSE | HAHD [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HAHD. |
| Bluebook | HAHD, http://www.acronymgeek.com/HAHD (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAHD, http://www.acronymgeek.com/HAHD (optional description here) (as of Feb. 16, 2012, 10:06). |
| AMA | HAHD. Acronym Geek. February 16, 2012, 10:06. Available at: http://www.acronymgeek.com/HAHD. Accessed February 16, 2012, 10:06. |