| APA | ENEO. (2012, February 15). In Acronym Geek. Retrieved 07:37, February 15, 2012, from http://www.acronymgeek.com/ENEO |
| MLA | "ENEO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ENEO>. |
| MHRA | 'ENEO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ENEO> [accessed 15 February 2012] |
| Chicago | "ENEO", http://www.acronymgeek.com/ENEO (accessed February 15, 2012). |
| CBE/CSE | ENEO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ENEO. |
| Bluebook | ENEO, http://www.acronymgeek.com/ENEO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ENEO, http://www.acronymgeek.com/ENEO (optional description here) (as of Feb. 15, 2012, 07:37). |
| AMA | ENEO. Acronym Geek. February 15, 2012, 07:37. Available at: http://www.acronymgeek.com/ENEO. Accessed February 15, 2012, 07:37. |