| APA | CEF. (2012, February 14). In Acronym Geek. Retrieved 07:14, February 14, 2012, from http://www.acronymgeek.com/CEF |
| MLA | "CEF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/CEF>. |
| MHRA | 'CEF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/CEF> [accessed 14 February 2012] |
| Chicago | "CEF", http://www.acronymgeek.com/CEF (accessed February 14, 2012). |
| CBE/CSE | CEF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/CEF. |
| Bluebook | CEF, http://www.acronymgeek.com/CEF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CEF, http://www.acronymgeek.com/CEF (optional description here) (as of Feb. 14, 2012, 07:14). |
| AMA | CEF. Acronym Geek. February 14, 2012, 07:14. Available at: http://www.acronymgeek.com/CEF. Accessed February 14, 2012, 07:14. |