| APA | ENV. (2012, February 13). In Acronym Geek. Retrieved 21:34, February 13, 2012, from http://www.acronymgeek.com/ENV |
| MLA | "ENV." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/ENV>. |
| MHRA | 'ENV', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/ENV> [accessed 13 February 2012] |
| Chicago | "ENV", http://www.acronymgeek.com/ENV (accessed February 13, 2012). |
| CBE/CSE | ENV [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/ENV. |
| Bluebook | ENV, http://www.acronymgeek.com/ENV (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ENV, http://www.acronymgeek.com/ENV (optional description here) (as of Feb. 13, 2012, 21:34). |
| AMA | ENV. Acronym Geek. February 13, 2012, 21:34. Available at: http://www.acronymgeek.com/ENV. Accessed February 13, 2012, 21:34. |