| APA | EFIR. (2012, February 17). In Acronym Geek. Retrieved 03:21, February 17, 2012, from http://www.acronymgeek.com/EFIR |
| MLA | "EFIR." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/EFIR>. |
| MHRA | 'EFIR', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/EFIR> [accessed 17 February 2012] |
| Chicago | "EFIR", http://www.acronymgeek.com/EFIR (accessed February 17, 2012). |
| CBE/CSE | EFIR [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/EFIR. |
| Bluebook | EFIR, http://www.acronymgeek.com/EFIR (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EFIR, http://www.acronymgeek.com/EFIR (optional description here) (as of Feb. 17, 2012, 03:21). |
| AMA | EFIR. Acronym Geek. February 17, 2012, 03:21. Available at: http://www.acronymgeek.com/EFIR. Accessed February 17, 2012, 03:21. |