| APA | ECEF. (2012, February 10). In Acronym Geek. Retrieved 12:46, February 10, 2012, from http://www.acronymgeek.com/ECEF |
| MLA | "ECEF." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/ECEF>. |
| MHRA | 'ECEF', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/ECEF> [accessed 10 February 2012] |
| Chicago | "ECEF", http://www.acronymgeek.com/ECEF (accessed February 10, 2012). |
| CBE/CSE | ECEF [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/ECEF. |
| Bluebook | ECEF, http://www.acronymgeek.com/ECEF (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ECEF, http://www.acronymgeek.com/ECEF (optional description here) (as of Feb. 10, 2012, 12:46). |
| AMA | ECEF. Acronym Geek. February 10, 2012, 12:46. Available at: http://www.acronymgeek.com/ECEF. Accessed February 10, 2012, 12:46. |