| APA | HVOC. (2012, February 14). In Acronym Geek. Retrieved 21:10, February 14, 2012, from http://www.acronymgeek.com/HVOC |
| MLA | "HVOC." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HVOC>. |
| MHRA | 'HVOC', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HVOC> [accessed 14 February 2012] |
| Chicago | "HVOC", http://www.acronymgeek.com/HVOC (accessed February 14, 2012). |
| CBE/CSE | HVOC [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HVOC. |
| Bluebook | HVOC, http://www.acronymgeek.com/HVOC (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HVOC, http://www.acronymgeek.com/HVOC (optional description here) (as of Feb. 14, 2012, 21:10). |
| AMA | HVOC. Acronym Geek. February 14, 2012, 21:10. Available at: http://www.acronymgeek.com/HVOC. Accessed February 14, 2012, 21:10. |