| APA | VSF. (2012, February 10). In Acronym Geek. Retrieved 17:18, February 10, 2012, from http://www.acronymgeek.com/VSF |
| MLA | "VSF." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/VSF>. |
| MHRA | 'VSF', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/VSF> [accessed 10 February 2012] |
| Chicago | "VSF", http://www.acronymgeek.com/VSF (accessed February 10, 2012). |
| CBE/CSE | VSF [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/VSF. |
| Bluebook | VSF, http://www.acronymgeek.com/VSF (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VSF, http://www.acronymgeek.com/VSF (optional description here) (as of Feb. 10, 2012, 17:18). |
| AMA | VSF. Acronym Geek. February 10, 2012, 17:18. Available at: http://www.acronymgeek.com/VSF. Accessed February 10, 2012, 17:18. |