| APA | EHD. (2012, February 13). In Acronym Geek. Retrieved 20:49, February 13, 2012, from http://www.acronymgeek.com/EHD |
| MLA | "EHD." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/EHD>. |
| MHRA | 'EHD', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/EHD> [accessed 13 February 2012] |
| Chicago | "EHD", http://www.acronymgeek.com/EHD (accessed February 13, 2012). |
| CBE/CSE | EHD [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/EHD. |
| Bluebook | EHD, http://www.acronymgeek.com/EHD (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EHD, http://www.acronymgeek.com/EHD (optional description here) (as of Feb. 13, 2012, 20:49). |
| AMA | EHD. Acronym Geek. February 13, 2012, 20:49. Available at: http://www.acronymgeek.com/EHD. Accessed February 13, 2012, 20:49. |