| APA | SEF. (2012, February 14). In Acronym Geek. Retrieved 07:50, February 14, 2012, from http://www.acronymgeek.com/SEF |
| MLA | "SEF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/SEF>. |
| MHRA | 'SEF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/SEF> [accessed 14 February 2012] |
| Chicago | "SEF", http://www.acronymgeek.com/SEF (accessed February 14, 2012). |
| CBE/CSE | SEF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/SEF. |
| Bluebook | SEF, http://www.acronymgeek.com/SEF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SEF, http://www.acronymgeek.com/SEF (optional description here) (as of Feb. 14, 2012, 07:50). |
| AMA | SEF. Acronym Geek. February 14, 2012, 07:50. Available at: http://www.acronymgeek.com/SEF. Accessed February 14, 2012, 07:50. |