| APA | HDOH. (2012, February 17). In Acronym Geek. Retrieved 05:31, February 17, 2012, from http://www.acronymgeek.com/HDOH |
| MLA | "HDOH." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/HDOH>. |
| MHRA | 'HDOH', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/HDOH> [accessed 17 February 2012] |
| Chicago | "HDOH", http://www.acronymgeek.com/HDOH (accessed February 17, 2012). |
| CBE/CSE | HDOH [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/HDOH. |
| Bluebook | HDOH, http://www.acronymgeek.com/HDOH (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HDOH, http://www.acronymgeek.com/HDOH (optional description here) (as of Feb. 17, 2012, 05:31). |
| AMA | HDOH. Acronym Geek. February 17, 2012, 05:31. Available at: http://www.acronymgeek.com/HDOH. Accessed February 17, 2012, 05:31. |