| APA | VZIF. (2012, February 15). In Acronym Geek. Retrieved 09:10, February 15, 2012, from http://www.acronymgeek.com/VZIF |
| MLA | "VZIF." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/VZIF>. |
| MHRA | 'VZIF', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/VZIF> [accessed 15 February 2012] |
| Chicago | "VZIF", http://www.acronymgeek.com/VZIF (accessed February 15, 2012). |
| CBE/CSE | VZIF [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/VZIF. |
| Bluebook | VZIF, http://www.acronymgeek.com/VZIF (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VZIF, http://www.acronymgeek.com/VZIF (optional description here) (as of Feb. 15, 2012, 09:10). |
| AMA | VZIF. Acronym Geek. February 15, 2012, 09:10. Available at: http://www.acronymgeek.com/VZIF. Accessed February 15, 2012, 09:10. |