| APA | OIHA. (2012, February 15). In Acronym Geek. Retrieved 14:01, February 15, 2012, from http://www.acronymgeek.com/OIHA |
| MLA | "OIHA." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OIHA>. |
| MHRA | 'OIHA', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OIHA> [accessed 15 February 2012] |
| Chicago | "OIHA", http://www.acronymgeek.com/OIHA (accessed February 15, 2012). |
| CBE/CSE | OIHA [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OIHA. |
| Bluebook | OIHA, http://www.acronymgeek.com/OIHA (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OIHA, http://www.acronymgeek.com/OIHA (optional description here) (as of Feb. 15, 2012, 14:01). |
| AMA | OIHA. Acronym Geek. February 15, 2012, 14:01. Available at: http://www.acronymgeek.com/OIHA. Accessed February 15, 2012, 14:01. |