| APA | OIRH. (2012, February 16). In Acronym Geek. Retrieved 03:21, February 16, 2012, from http://www.acronymgeek.com/OIRH |
| MLA | "OIRH." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OIRH>. |
| MHRA | 'OIRH', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OIRH> [accessed 16 February 2012] |
| Chicago | "OIRH", http://www.acronymgeek.com/OIRH (accessed February 16, 2012). |
| CBE/CSE | OIRH [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OIRH. |
| Bluebook | OIRH, http://www.acronymgeek.com/OIRH (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OIRH, http://www.acronymgeek.com/OIRH (optional description here) (as of Feb. 16, 2012, 03:21). |
| AMA | OIRH. Acronym Geek. February 16, 2012, 03:21. Available at: http://www.acronymgeek.com/OIRH. Accessed February 16, 2012, 03:21. |