| APA | OIHP. (2012, February 14). In Acronym Geek. Retrieved 20:10, February 14, 2012, from http://www.acronymgeek.com/OIHP |
| MLA | "OIHP." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OIHP>. |
| MHRA | 'OIHP', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OIHP> [accessed 14 February 2012] |
| Chicago | "OIHP", http://www.acronymgeek.com/OIHP (accessed February 14, 2012). |
| CBE/CSE | OIHP [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OIHP. |
| Bluebook | OIHP, http://www.acronymgeek.com/OIHP (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OIHP, http://www.acronymgeek.com/OIHP (optional description here) (as of Feb. 14, 2012, 20:10). |
| AMA | OIHP. Acronym Geek. February 14, 2012, 20:10. Available at: http://www.acronymgeek.com/OIHP. Accessed February 14, 2012, 20:10. |