| APA | ENEF. (2012, February 16). In Acronym Geek. Retrieved 02:38, February 16, 2012, from http://www.acronymgeek.com/ENEF |
| MLA | "ENEF." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/ENEF>. |
| MHRA | 'ENEF', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/ENEF> [accessed 16 February 2012] |
| Chicago | "ENEF", http://www.acronymgeek.com/ENEF (accessed February 16, 2012). |
| CBE/CSE | ENEF [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/ENEF. |
| Bluebook | ENEF, http://www.acronymgeek.com/ENEF (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ENEF, http://www.acronymgeek.com/ENEF (optional description here) (as of Feb. 16, 2012, 02:38). |
| AMA | ENEF. Acronym Geek. February 16, 2012, 02:38. Available at: http://www.acronymgeek.com/ENEF. Accessed February 16, 2012, 02:38. |