| APA | VAS. (2012, February 14). In Acronym Geek. Retrieved 19:28, February 14, 2012, from http://www.acronymgeek.com/VAS |
| MLA | "VAS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/VAS>. |
| MHRA | 'VAS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/VAS> [accessed 14 February 2012] |
| Chicago | "VAS", http://www.acronymgeek.com/VAS (accessed February 14, 2012). |
| CBE/CSE | VAS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/VAS. |
| Bluebook | VAS, http://www.acronymgeek.com/VAS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VAS, http://www.acronymgeek.com/VAS (optional description here) (as of Feb. 14, 2012, 19:28). |
| AMA | VAS. Acronym Geek. February 14, 2012, 19:28. Available at: http://www.acronymgeek.com/VAS. Accessed February 14, 2012, 19:28. |