| APA | VFOK. (2012, February 15). In Acronym Geek. Retrieved 00:08, February 15, 2012, from http://www.acronymgeek.com/VFOK |
| MLA | "VFOK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/VFOK>. |
| MHRA | 'VFOK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/VFOK> [accessed 15 February 2012] |
| Chicago | "VFOK", http://www.acronymgeek.com/VFOK (accessed February 15, 2012). |
| CBE/CSE | VFOK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/VFOK. |
| Bluebook | VFOK, http://www.acronymgeek.com/VFOK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VFOK, http://www.acronymgeek.com/VFOK (optional description here) (as of Feb. 15, 2012, 00:08). |
| AMA | VFOK. Acronym Geek. February 15, 2012, 00:08. Available at: http://www.acronymgeek.com/VFOK. Accessed February 15, 2012, 00:08. |