| APA | VYOI. (2012, February 15). In Acronym Geek. Retrieved 21:49, February 15, 2012, from http://www.acronymgeek.com/VYOI |
| MLA | "VYOI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/VYOI>. |
| MHRA | 'VYOI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/VYOI> [accessed 15 February 2012] |
| Chicago | "VYOI", http://www.acronymgeek.com/VYOI (accessed February 15, 2012). |
| CBE/CSE | VYOI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/VYOI. |
| Bluebook | VYOI, http://www.acronymgeek.com/VYOI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VYOI, http://www.acronymgeek.com/VYOI (optional description here) (as of Feb. 15, 2012, 21:49). |
| AMA | VYOI. Acronym Geek. February 15, 2012, 21:49. Available at: http://www.acronymgeek.com/VYOI. Accessed February 15, 2012, 21:49. |