| APA | HHDM. (2012, February 16). In Acronym Geek. Retrieved 15:24, February 16, 2012, from http://www.acronymgeek.com/HHDM |
| MLA | "HHDM." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HHDM>. |
| MHRA | 'HHDM', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HHDM> [accessed 16 February 2012] |
| Chicago | "HHDM", http://www.acronymgeek.com/HHDM (accessed February 16, 2012). |
| CBE/CSE | HHDM [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HHDM. |
| Bluebook | HHDM, http://www.acronymgeek.com/HHDM (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HHDM, http://www.acronymgeek.com/HHDM (optional description here) (as of Feb. 16, 2012, 15:24). |
| AMA | HHDM. Acronym Geek. February 16, 2012, 15:24. Available at: http://www.acronymgeek.com/HHDM. Accessed February 16, 2012, 15:24. |