| APA | VYI. (2012, February 13). In Acronym Geek. Retrieved 23:39, February 13, 2012, from http://www.acronymgeek.com/VYI |
| MLA | "VYI." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/VYI>. |
| MHRA | 'VYI', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/VYI> [accessed 13 February 2012] |
| Chicago | "VYI", http://www.acronymgeek.com/VYI (accessed February 13, 2012). |
| CBE/CSE | VYI [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/VYI. |
| Bluebook | VYI, http://www.acronymgeek.com/VYI (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VYI, http://www.acronymgeek.com/VYI (optional description here) (as of Feb. 13, 2012, 23:39). |
| AMA | VYI. Acronym Geek. February 13, 2012, 23:39. Available at: http://www.acronymgeek.com/VYI. Accessed February 13, 2012, 23:39. |