| APA | IEL. (2012, February 13). In Acronym Geek. Retrieved 21:30, February 13, 2012, from http://www.acronymgeek.com/IEL |
| MLA | "IEL." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/IEL>. |
| MHRA | 'IEL', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/IEL> [accessed 13 February 2012] |
| Chicago | "IEL", http://www.acronymgeek.com/IEL (accessed February 13, 2012). |
| CBE/CSE | IEL [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/IEL. |
| Bluebook | IEL, http://www.acronymgeek.com/IEL (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IEL, http://www.acronymgeek.com/IEL (optional description here) (as of Feb. 13, 2012, 21:30). |
| AMA | IEL. Acronym Geek. February 13, 2012, 21:30. Available at: http://www.acronymgeek.com/IEL. Accessed February 13, 2012, 21:30. |