| APA | ELFI. (2012, February 15). In Acronym Geek. Retrieved 02:34, February 15, 2012, from http://www.acronymgeek.com/ELFI |
| MLA | "ELFI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ELFI>. |
| MHRA | 'ELFI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ELFI> [accessed 15 February 2012] |
| Chicago | "ELFI", http://www.acronymgeek.com/ELFI (accessed February 15, 2012). |
| CBE/CSE | ELFI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ELFI. |
| Bluebook | ELFI, http://www.acronymgeek.com/ELFI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ELFI, http://www.acronymgeek.com/ELFI (optional description here) (as of Feb. 15, 2012, 02:34). |
| AMA | ELFI. Acronym Geek. February 15, 2012, 02:34. Available at: http://www.acronymgeek.com/ELFI. Accessed February 15, 2012, 02:34. |