| APA | VYPO. (2012, February 16). In Acronym Geek. Retrieved 20:25, February 16, 2012, from http://www.acronymgeek.com/VYPO |
| MLA | "VYPO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/VYPO>. |
| MHRA | 'VYPO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/VYPO> [accessed 16 February 2012] |
| Chicago | "VYPO", http://www.acronymgeek.com/VYPO (accessed February 16, 2012). |
| CBE/CSE | VYPO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/VYPO. |
| Bluebook | VYPO, http://www.acronymgeek.com/VYPO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VYPO, http://www.acronymgeek.com/VYPO (optional description here) (as of Feb. 16, 2012, 20:25). |
| AMA | VYPO. Acronym Geek. February 16, 2012, 20:25. Available at: http://www.acronymgeek.com/VYPO. Accessed February 16, 2012, 20:25. |