| APA | OIH. (2012, February 13). In Acronym Geek. Retrieved 23:30, February 13, 2012, from http://www.acronymgeek.com/OIH |
| MLA | "OIH." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/OIH>. |
| MHRA | 'OIH', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/OIH> [accessed 13 February 2012] |
| Chicago | "OIH", http://www.acronymgeek.com/OIH (accessed February 13, 2012). |
| CBE/CSE | OIH [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/OIH. |
| Bluebook | OIH, http://www.acronymgeek.com/OIH (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OIH, http://www.acronymgeek.com/OIH (optional description here) (as of Feb. 13, 2012, 23:30). |
| AMA | OIH. Acronym Geek. February 13, 2012, 23:30. Available at: http://www.acronymgeek.com/OIH. Accessed February 13, 2012, 23:30. |