| APA | EFZI. (2012, February 14). In Acronym Geek. Retrieved 17:14, February 14, 2012, from http://www.acronymgeek.com/EFZI |
| MLA | "EFZI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/EFZI>. |
| MHRA | 'EFZI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/EFZI> [accessed 14 February 2012] |
| Chicago | "EFZI", http://www.acronymgeek.com/EFZI (accessed February 14, 2012). |
| CBE/CSE | EFZI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/EFZI. |
| Bluebook | EFZI, http://www.acronymgeek.com/EFZI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EFZI, http://www.acronymgeek.com/EFZI (optional description here) (as of Feb. 14, 2012, 17:14). |
| AMA | EFZI. Acronym Geek. February 14, 2012, 17:14. Available at: http://www.acronymgeek.com/EFZI. Accessed February 14, 2012, 17:14. |