| APA | OKHN. (2012, February 16). In Acronym Geek. Retrieved 20:24, February 16, 2012, from http://www.acronymgeek.com/OKHN |
| MLA | "OKHN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OKHN>. |
| MHRA | 'OKHN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OKHN> [accessed 16 February 2012] |
| Chicago | "OKHN", http://www.acronymgeek.com/OKHN (accessed February 16, 2012). |
| CBE/CSE | OKHN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OKHN. |
| Bluebook | OKHN, http://www.acronymgeek.com/OKHN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OKHN, http://www.acronymgeek.com/OKHN (optional description here) (as of Feb. 16, 2012, 20:24). |
| AMA | OKHN. Acronym Geek. February 16, 2012, 20:24. Available at: http://www.acronymgeek.com/OKHN. Accessed February 16, 2012, 20:24. |