| APA | ECYS. (2012, February 11). In Acronym Geek. Retrieved 10:22, February 11, 2012, from http://www.acronymgeek.com/ECYS |
| MLA | "ECYS." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/ECYS>. |
| MHRA | 'ECYS', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/ECYS> [accessed 11 February 2012] |
| Chicago | "ECYS", http://www.acronymgeek.com/ECYS (accessed February 11, 2012). |
| CBE/CSE | ECYS [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/ECYS. |
| Bluebook | ECYS, http://www.acronymgeek.com/ECYS (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ECYS, http://www.acronymgeek.com/ECYS (optional description here) (as of Feb. 11, 2012, 10:22). |
| AMA | ECYS. Acronym Geek. February 11, 2012, 10:22. Available at: http://www.acronymgeek.com/ECYS. Accessed February 11, 2012, 10:22. |