| APA | HCIX. (2012, February 15). In Acronym Geek. Retrieved 11:04, February 15, 2012, from http://www.acronymgeek.com/HCIX |
| MLA | "HCIX." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HCIX>. |
| MHRA | 'HCIX', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HCIX> [accessed 15 February 2012] |
| Chicago | "HCIX", http://www.acronymgeek.com/HCIX (accessed February 15, 2012). |
| CBE/CSE | HCIX [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HCIX. |
| Bluebook | HCIX, http://www.acronymgeek.com/HCIX (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HCIX, http://www.acronymgeek.com/HCIX (optional description here) (as of Feb. 15, 2012, 11:04). |
| AMA | HCIX. Acronym Geek. February 15, 2012, 11:04. Available at: http://www.acronymgeek.com/HCIX. Accessed February 15, 2012, 11:04. |