| APA | EFID. (2012, February 16). In Acronym Geek. Retrieved 23:48, February 16, 2012, from http://www.acronymgeek.com/EFID |
| MLA | "EFID." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/EFID>. |
| MHRA | 'EFID', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/EFID> [accessed 16 February 2012] |
| Chicago | "EFID", http://www.acronymgeek.com/EFID (accessed February 16, 2012). |
| CBE/CSE | EFID [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/EFID. |
| Bluebook | EFID, http://www.acronymgeek.com/EFID (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EFID, http://www.acronymgeek.com/EFID (optional description here) (as of Feb. 16, 2012, 23:48). |
| AMA | EFID. Acronym Geek. February 16, 2012, 23:48. Available at: http://www.acronymgeek.com/EFID. Accessed February 16, 2012, 23:48. |