| APA | EFZS. (2012, February 16). In Acronym Geek. Retrieved 14:28, February 16, 2012, from http://www.acronymgeek.com/EFZS |
| MLA | "EFZS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/EFZS>. |
| MHRA | 'EFZS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/EFZS> [accessed 16 February 2012] |
| Chicago | "EFZS", http://www.acronymgeek.com/EFZS (accessed February 16, 2012). |
| CBE/CSE | EFZS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/EFZS. |
| Bluebook | EFZS, http://www.acronymgeek.com/EFZS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EFZS, http://www.acronymgeek.com/EFZS (optional description here) (as of Feb. 16, 2012, 14:28). |
| AMA | EFZS. Acronym Geek. February 16, 2012, 14:28. Available at: http://www.acronymgeek.com/EFZS. Accessed February 16, 2012, 14:28. |