| APA | EF 2000. (2012, February 11). In Acronym Geek. Retrieved 17:47, February 11, 2012, from http://www.acronymgeek.com/EF 2000 |
| MLA | "EF 2000." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EF 2000>. |
| MHRA | 'EF 2000', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EF 2000> [accessed 11 February 2012] |
| Chicago | "EF 2000", http://www.acronymgeek.com/EF 2000 (accessed February 11, 2012). |
| CBE/CSE | EF 2000 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EF 2000. |
| Bluebook | EF 2000, http://www.acronymgeek.com/EF 2000 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EF 2000, http://www.acronymgeek.com/EF 2000 (optional description here) (as of Feb. 11, 2012, 17:47). |
| AMA | EF 2000. Acronym Geek. February 11, 2012, 17:47. Available at: http://www.acronymgeek.com/EF 2000. Accessed February 11, 2012, 17:47. |