| APA | EVFO. (2012, February 17). In Acronym Geek. Retrieved 04:52, February 17, 2012, from http://www.acronymgeek.com/EVFO |
| MLA | "EVFO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/EVFO>. |
| MHRA | 'EVFO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/EVFO> [accessed 17 February 2012] |
| Chicago | "EVFO", http://www.acronymgeek.com/EVFO (accessed February 17, 2012). |
| CBE/CSE | EVFO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/EVFO. |
| Bluebook | EVFO, http://www.acronymgeek.com/EVFO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EVFO, http://www.acronymgeek.com/EVFO (optional description here) (as of Feb. 17, 2012, 04:52). |
| AMA | EVFO. Acronym Geek. February 17, 2012, 04:52. Available at: http://www.acronymgeek.com/EVFO. Accessed February 17, 2012, 04:52. |