| APA | OEHN. (2012, February 16). In Acronym Geek. Retrieved 07:45, February 16, 2012, from http://www.acronymgeek.com/OEHN |
| MLA | "OEHN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OEHN>. |
| MHRA | 'OEHN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OEHN> [accessed 16 February 2012] |
| Chicago | "OEHN", http://www.acronymgeek.com/OEHN (accessed February 16, 2012). |
| CBE/CSE | OEHN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OEHN. |
| Bluebook | OEHN, http://www.acronymgeek.com/OEHN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OEHN, http://www.acronymgeek.com/OEHN (optional description here) (as of Feb. 16, 2012, 07:45). |
| AMA | OEHN. Acronym Geek. February 16, 2012, 07:45. Available at: http://www.acronymgeek.com/OEHN. Accessed February 16, 2012, 07:45. |