| APA | OVOC. (2012, February 15). In Acronym Geek. Retrieved 21:32, February 15, 2012, from http://www.acronymgeek.com/OVOC |
| MLA | "OVOC." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OVOC>. |
| MHRA | 'OVOC', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OVOC> [accessed 15 February 2012] |
| Chicago | "OVOC", http://www.acronymgeek.com/OVOC (accessed February 15, 2012). |
| CBE/CSE | OVOC [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OVOC. |
| Bluebook | OVOC, http://www.acronymgeek.com/OVOC (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OVOC, http://www.acronymgeek.com/OVOC (optional description here) (as of Feb. 15, 2012, 21:32). |
| AMA | OVOC. Acronym Geek. February 15, 2012, 21:32. Available at: http://www.acronymgeek.com/OVOC. Accessed February 15, 2012, 21:32. |