| APA | DDHR. (2012, February 15). In Acronym Geek. Retrieved 10:44, February 15, 2012, from http://www.acronymgeek.com/DDHR |
| MLA | "DDHR." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DDHR>. |
| MHRA | 'DDHR', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DDHR> [accessed 15 February 2012] |
| Chicago | "DDHR", http://www.acronymgeek.com/DDHR (accessed February 15, 2012). |
| CBE/CSE | DDHR [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DDHR. |
| Bluebook | DDHR, http://www.acronymgeek.com/DDHR (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDHR, http://www.acronymgeek.com/DDHR (optional description here) (as of Feb. 15, 2012, 10:44). |
| AMA | DDHR. Acronym Geek. February 15, 2012, 10:44. Available at: http://www.acronymgeek.com/DDHR. Accessed February 15, 2012, 10:44. |