| APA | VDY. (2012, February 13). In Acronym Geek. Retrieved 21:34, February 13, 2012, from http://www.acronymgeek.com/VDY |
| MLA | "VDY." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/VDY>. |
| MHRA | 'VDY', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/VDY> [accessed 13 February 2012] |
| Chicago | "VDY", http://www.acronymgeek.com/VDY (accessed February 13, 2012). |
| CBE/CSE | VDY [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/VDY. |
| Bluebook | VDY, http://www.acronymgeek.com/VDY (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VDY, http://www.acronymgeek.com/VDY (optional description here) (as of Feb. 13, 2012, 21:34). |
| AMA | VDY. Acronym Geek. February 13, 2012, 21:34. Available at: http://www.acronymgeek.com/VDY. Accessed February 13, 2012, 21:34. |