| APA | VIOS. (2012, February 14). In Acronym Geek. Retrieved 19:55, February 14, 2012, from http://www.acronymgeek.com/VIOS |
| MLA | "VIOS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/VIOS>. |
| MHRA | 'VIOS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/VIOS> [accessed 14 February 2012] |
| Chicago | "VIOS", http://www.acronymgeek.com/VIOS (accessed February 14, 2012). |
| CBE/CSE | VIOS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/VIOS. |
| Bluebook | VIOS, http://www.acronymgeek.com/VIOS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VIOS, http://www.acronymgeek.com/VIOS (optional description here) (as of Feb. 14, 2012, 19:55). |
| AMA | VIOS. Acronym Geek. February 14, 2012, 19:55. Available at: http://www.acronymgeek.com/VIOS. Accessed February 14, 2012, 19:55. |