| APA | OEH. (2012, February 14). In Acronym Geek. Retrieved 09:08, February 14, 2012, from http://www.acronymgeek.com/OEH |
| MLA | "OEH." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OEH>. |
| MHRA | 'OEH', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OEH> [accessed 14 February 2012] |
| Chicago | "OEH", http://www.acronymgeek.com/OEH (accessed February 14, 2012). |
| CBE/CSE | OEH [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OEH. |
| Bluebook | OEH, http://www.acronymgeek.com/OEH (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OEH, http://www.acronymgeek.com/OEH (optional description here) (as of Feb. 14, 2012, 09:08). |
| AMA | OEH. Acronym Geek. February 14, 2012, 09:08. Available at: http://www.acronymgeek.com/OEH. Accessed February 14, 2012, 09:08. |