| APA | HIOH. (2012, February 14). In Acronym Geek. Retrieved 20:51, February 14, 2012, from http://www.acronymgeek.com/HIOH |
| MLA | "HIOH." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HIOH>. |
| MHRA | 'HIOH', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HIOH> [accessed 14 February 2012] |
| Chicago | "HIOH", http://www.acronymgeek.com/HIOH (accessed February 14, 2012). |
| CBE/CSE | HIOH [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HIOH. |
| Bluebook | HIOH, http://www.acronymgeek.com/HIOH (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HIOH, http://www.acronymgeek.com/HIOH (optional description here) (as of Feb. 14, 2012, 20:51). |
| AMA | HIOH. Acronym Geek. February 14, 2012, 20:51. Available at: http://www.acronymgeek.com/HIOH. Accessed February 14, 2012, 20:51. |