| APA | EC'S. (2012, February 11). In Acronym Geek. Retrieved 17:21, February 11, 2012, from http://www.acronymgeek.com/EC'S |
| MLA | "EC'S." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EC'S>. |
| MHRA | 'EC'S', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EC'S> [accessed 11 February 2012] |
| Chicago | "EC'S", http://www.acronymgeek.com/EC'S (accessed February 11, 2012). |
| CBE/CSE | EC'S [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EC'S. |
| Bluebook | EC'S, http://www.acronymgeek.com/EC'S (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EC'S, http://www.acronymgeek.com/EC'S (optional description here) (as of Feb. 11, 2012, 17:21). |
| AMA | EC'S. Acronym Geek. February 11, 2012, 17:21. Available at: http://www.acronymgeek.com/EC'S. Accessed February 11, 2012, 17:21. |