| APA | ECZO. (2012, February 15). In Acronym Geek. Retrieved 23:01, February 15, 2012, from http://www.acronymgeek.com/ECZO |
| MLA | "ECZO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ECZO>. |
| MHRA | 'ECZO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ECZO> [accessed 15 February 2012] |
| Chicago | "ECZO", http://www.acronymgeek.com/ECZO (accessed February 15, 2012). |
| CBE/CSE | ECZO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ECZO. |
| Bluebook | ECZO, http://www.acronymgeek.com/ECZO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ECZO, http://www.acronymgeek.com/ECZO (optional description here) (as of Feb. 15, 2012, 23:01). |
| AMA | ECZO. Acronym Geek. February 15, 2012, 23:01. Available at: http://www.acronymgeek.com/ECZO. Accessed February 15, 2012, 23:01. |