| APA | ELFS. (2012, February 17). In Acronym Geek. Retrieved 04:56, February 17, 2012, from http://www.acronymgeek.com/ELFS |
| MLA | "ELFS." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ELFS>. |
| MHRA | 'ELFS', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ELFS> [accessed 17 February 2012] |
| Chicago | "ELFS", http://www.acronymgeek.com/ELFS (accessed February 17, 2012). |
| CBE/CSE | ELFS [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ELFS. |
| Bluebook | ELFS, http://www.acronymgeek.com/ELFS (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ELFS, http://www.acronymgeek.com/ELFS (optional description here) (as of Feb. 17, 2012, 04:56). |
| AMA | ELFS. Acronym Geek. February 17, 2012, 04:56. Available at: http://www.acronymgeek.com/ELFS. Accessed February 17, 2012, 04:56. |