| APA | VOI. (2012, February 14). In Acronym Geek. Retrieved 02:18, February 14, 2012, from http://www.acronymgeek.com/VOI |
| MLA | "VOI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/VOI>. |
| MHRA | 'VOI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/VOI> [accessed 14 February 2012] |
| Chicago | "VOI", http://www.acronymgeek.com/VOI (accessed February 14, 2012). |
| CBE/CSE | VOI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/VOI. |
| Bluebook | VOI, http://www.acronymgeek.com/VOI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VOI, http://www.acronymgeek.com/VOI (optional description here) (as of Feb. 14, 2012, 02:18). |
| AMA | VOI. Acronym Geek. February 14, 2012, 02:18. Available at: http://www.acronymgeek.com/VOI. Accessed February 14, 2012, 02:18. |