| APA | VFOI. (2012, February 17). In Acronym Geek. Retrieved 06:55, February 17, 2012, from http://www.acronymgeek.com/VFOI |
| MLA | "VFOI." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/VFOI>. |
| MHRA | 'VFOI', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/VFOI> [accessed 17 February 2012] |
| Chicago | "VFOI", http://www.acronymgeek.com/VFOI (accessed February 17, 2012). |
| CBE/CSE | VFOI [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/VFOI. |
| Bluebook | VFOI, http://www.acronymgeek.com/VFOI (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VFOI, http://www.acronymgeek.com/VFOI (optional description here) (as of Feb. 17, 2012, 06:55). |
| AMA | VFOI. Acronym Geek. February 17, 2012, 06:55. Available at: http://www.acronymgeek.com/VFOI. Accessed February 17, 2012, 06:55. |