| APA | HION. (2012, February 16). In Acronym Geek. Retrieved 07:36, February 16, 2012, from http://www.acronymgeek.com/HION |
| MLA | "HION." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HION>. |
| MHRA | 'HION', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HION> [accessed 16 February 2012] |
| Chicago | "HION", http://www.acronymgeek.com/HION (accessed February 16, 2012). |
| CBE/CSE | HION [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HION. |
| Bluebook | HION, http://www.acronymgeek.com/HION (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HION, http://www.acronymgeek.com/HION (optional description here) (as of Feb. 16, 2012, 07:36). |
| AMA | HION. Acronym Geek. February 16, 2012, 07:36. Available at: http://www.acronymgeek.com/HION. Accessed February 16, 2012, 07:36. |