| APA | EHDA. (2012, February 14). In Acronym Geek. Retrieved 17:52, February 14, 2012, from http://www.acronymgeek.com/EHDA |
| MLA | "EHDA." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/EHDA>. |
| MHRA | 'EHDA', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/EHDA> [accessed 14 February 2012] |
| Chicago | "EHDA", http://www.acronymgeek.com/EHDA (accessed February 14, 2012). |
| CBE/CSE | EHDA [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/EHDA. |
| Bluebook | EHDA, http://www.acronymgeek.com/EHDA (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EHDA, http://www.acronymgeek.com/EHDA (optional description here) (as of Feb. 14, 2012, 17:52). |
| AMA | EHDA. Acronym Geek. February 14, 2012, 17:52. Available at: http://www.acronymgeek.com/EHDA. Accessed February 14, 2012, 17:52. |