| APA | SEL. (2012, February 13). In Acronym Geek. Retrieved 23:23, February 13, 2012, from http://www.acronymgeek.com/SEL |
| MLA | "SEL." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/SEL>. |
| MHRA | 'SEL', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/SEL> [accessed 13 February 2012] |
| Chicago | "SEL", http://www.acronymgeek.com/SEL (accessed February 13, 2012). |
| CBE/CSE | SEL [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/SEL. |
| Bluebook | SEL, http://www.acronymgeek.com/SEL (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SEL, http://www.acronymgeek.com/SEL (optional description here) (as of Feb. 13, 2012, 23:23). |
| AMA | SEL. Acronym Geek. February 13, 2012, 23:23. Available at: http://www.acronymgeek.com/SEL. Accessed February 13, 2012, 23:23. |