| APA | EHAA. (2012, February 11). In Acronym Geek. Retrieved 19:11, February 11, 2012, from http://www.acronymgeek.com/EHAA |
| MLA | "EHAA." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EHAA>. |
| MHRA | 'EHAA', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EHAA> [accessed 11 February 2012] |
| Chicago | "EHAA", http://www.acronymgeek.com/EHAA (accessed February 11, 2012). |
| CBE/CSE | EHAA [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EHAA. |
| Bluebook | EHAA, http://www.acronymgeek.com/EHAA (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EHAA, http://www.acronymgeek.com/EHAA (optional description here) (as of Feb. 11, 2012, 19:11). |
| AMA | EHAA. Acronym Geek. February 11, 2012, 19:11. Available at: http://www.acronymgeek.com/EHAA. Accessed February 11, 2012, 19:11. |