| APA | EF-2. (2012, February 11). In Acronym Geek. Retrieved 15:03, February 11, 2012, from http://www.acronymgeek.com/EF-2 |
| MLA | "EF-2." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EF-2>. |
| MHRA | 'EF-2', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EF-2> [accessed 11 February 2012] |
| Chicago | "EF-2", http://www.acronymgeek.com/EF-2 (accessed February 11, 2012). |
| CBE/CSE | EF-2 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EF-2. |
| Bluebook | EF-2, http://www.acronymgeek.com/EF-2 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EF-2, http://www.acronymgeek.com/EF-2 (optional description here) (as of Feb. 11, 2012, 15:03). |
| AMA | EF-2. Acronym Geek. February 11, 2012, 15:03. Available at: http://www.acronymgeek.com/EF-2. Accessed February 11, 2012, 15:03. |