| APA | ENVF. (2012, February 15). In Acronym Geek. Retrieved 21:44, February 15, 2012, from http://www.acronymgeek.com/ENVF |
| MLA | "ENVF." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ENVF>. |
| MHRA | 'ENVF', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ENVF> [accessed 15 February 2012] |
| Chicago | "ENVF", http://www.acronymgeek.com/ENVF (accessed February 15, 2012). |
| CBE/CSE | ENVF [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ENVF. |
| Bluebook | ENVF, http://www.acronymgeek.com/ENVF (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ENVF, http://www.acronymgeek.com/ENVF (optional description here) (as of Feb. 15, 2012, 21:44). |
| AMA | ENVF. Acronym Geek. February 15, 2012, 21:44. Available at: http://www.acronymgeek.com/ENVF. Accessed February 15, 2012, 21:44. |