| APA | DHO. (2012, February 14). In Acronym Geek. Retrieved 01:17, February 14, 2012, from http://www.acronymgeek.com/DHO |
| MLA | "DHO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/DHO>. |
| MHRA | 'DHO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/DHO> [accessed 14 February 2012] |
| Chicago | "DHO", http://www.acronymgeek.com/DHO (accessed February 14, 2012). |
| CBE/CSE | DHO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/DHO. |
| Bluebook | DHO, http://www.acronymgeek.com/DHO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DHO, http://www.acronymgeek.com/DHO (optional description here) (as of Feb. 14, 2012, 01:17). |
| AMA | DHO. Acronym Geek. February 14, 2012, 01:17. Available at: http://www.acronymgeek.com/DHO. Accessed February 14, 2012, 01:17. |