| APA | VHOA. (2012, February 15). In Acronym Geek. Retrieved 00:41, February 15, 2012, from http://www.acronymgeek.com/VHOA |
| MLA | "VHOA." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/VHOA>. |
| MHRA | 'VHOA', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/VHOA> [accessed 15 February 2012] |
| Chicago | "VHOA", http://www.acronymgeek.com/VHOA (accessed February 15, 2012). |
| CBE/CSE | VHOA [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/VHOA. |
| Bluebook | VHOA, http://www.acronymgeek.com/VHOA (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VHOA, http://www.acronymgeek.com/VHOA (optional description here) (as of Feb. 15, 2012, 00:41). |
| AMA | VHOA. Acronym Geek. February 15, 2012, 00:41. Available at: http://www.acronymgeek.com/VHOA. Accessed February 15, 2012, 00:41. |