| APA | OCOH. (2012, February 14). In Acronym Geek. Retrieved 18:11, February 14, 2012, from http://www.acronymgeek.com/OCOH |
| MLA | "OCOH." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OCOH>. |
| MHRA | 'OCOH', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OCOH> [accessed 14 February 2012] |
| Chicago | "OCOH", http://www.acronymgeek.com/OCOH (accessed February 14, 2012). |
| CBE/CSE | OCOH [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OCOH. |
| Bluebook | OCOH, http://www.acronymgeek.com/OCOH (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OCOH, http://www.acronymgeek.com/OCOH (optional description here) (as of Feb. 14, 2012, 18:11). |
| AMA | OCOH. Acronym Geek. February 14, 2012, 18:11. Available at: http://www.acronymgeek.com/OCOH. Accessed February 14, 2012, 18:11. |