| APA | VYK. (2012, February 13). In Acronym Geek. Retrieved 20:49, February 13, 2012, from http://www.acronymgeek.com/VYK |
| MLA | "VYK." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/VYK>. |
| MHRA | 'VYK', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/VYK> [accessed 13 February 2012] |
| Chicago | "VYK", http://www.acronymgeek.com/VYK (accessed February 13, 2012). |
| CBE/CSE | VYK [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/VYK. |
| Bluebook | VYK, http://www.acronymgeek.com/VYK (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VYK, http://www.acronymgeek.com/VYK (optional description here) (as of Feb. 13, 2012, 20:49). |
| AMA | VYK. Acronym Geek. February 13, 2012, 20:49. Available at: http://www.acronymgeek.com/VYK. Accessed February 13, 2012, 20:49. |