| APA | DHOA. (2012, February 16). In Acronym Geek. Retrieved 21:20, February 16, 2012, from http://www.acronymgeek.com/DHOA |
| MLA | "DHOA." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/DHOA>. |
| MHRA | 'DHOA', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/DHOA> [accessed 16 February 2012] |
| Chicago | "DHOA", http://www.acronymgeek.com/DHOA (accessed February 16, 2012). |
| CBE/CSE | DHOA [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/DHOA. |
| Bluebook | DHOA, http://www.acronymgeek.com/DHOA (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DHOA, http://www.acronymgeek.com/DHOA (optional description here) (as of Feb. 16, 2012, 21:20). |
| AMA | DHOA. Acronym Geek. February 16, 2012, 21:20. Available at: http://www.acronymgeek.com/DHOA. Accessed February 16, 2012, 21:20. |