| APA | VIO. (2012, February 14). In Acronym Geek. Retrieved 06:35, February 14, 2012, from http://www.acronymgeek.com/VIO |
| MLA | "VIO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/VIO>. |
| MHRA | 'VIO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/VIO> [accessed 14 February 2012] |
| Chicago | "VIO", http://www.acronymgeek.com/VIO (accessed February 14, 2012). |
| CBE/CSE | VIO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/VIO. |
| Bluebook | VIO, http://www.acronymgeek.com/VIO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VIO, http://www.acronymgeek.com/VIO (optional description here) (as of Feb. 14, 2012, 06:35). |
| AMA | VIO. Acronym Geek. February 14, 2012, 06:35. Available at: http://www.acronymgeek.com/VIO. Accessed February 14, 2012, 06:35. |