| APA | VHVO. (2012, February 16). In Acronym Geek. Retrieved 18:57, February 16, 2012, from http://www.acronymgeek.com/VHVO |
| MLA | "VHVO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/VHVO>. |
| MHRA | 'VHVO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/VHVO> [accessed 16 February 2012] |
| Chicago | "VHVO", http://www.acronymgeek.com/VHVO (accessed February 16, 2012). |
| CBE/CSE | VHVO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/VHVO. |
| Bluebook | VHVO, http://www.acronymgeek.com/VHVO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VHVO, http://www.acronymgeek.com/VHVO (optional description here) (as of Feb. 16, 2012, 18:57). |
| AMA | VHVO. Acronym Geek. February 16, 2012, 18:57. Available at: http://www.acronymgeek.com/VHVO. Accessed February 16, 2012, 18:57. |