| APA | IEHO. (2012, February 15). In Acronym Geek. Retrieved 04:29, February 15, 2012, from http://www.acronymgeek.com/IEHO |
| MLA | "IEHO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/IEHO>. |
| MHRA | 'IEHO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/IEHO> [accessed 15 February 2012] |
| Chicago | "IEHO", http://www.acronymgeek.com/IEHO (accessed February 15, 2012). |
| CBE/CSE | IEHO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/IEHO. |
| Bluebook | IEHO, http://www.acronymgeek.com/IEHO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IEHO, http://www.acronymgeek.com/IEHO (optional description here) (as of Feb. 15, 2012, 04:29). |
| AMA | IEHO. Acronym Geek. February 15, 2012, 04:29. Available at: http://www.acronymgeek.com/IEHO. Accessed February 15, 2012, 04:29. |