| APA | EC. (2012, February 11). In Acronym Geek. Retrieved 06:56, February 11, 2012, from http://www.acronymgeek.com/EC |
| MLA | "EC." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EC>. |
| MHRA | 'EC', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EC> [accessed 11 February 2012] |
| Chicago | "EC", http://www.acronymgeek.com/EC (accessed February 11, 2012). |
| CBE/CSE | EC [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EC. |
| Bluebook | EC, http://www.acronymgeek.com/EC (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EC, http://www.acronymgeek.com/EC (optional description here) (as of Feb. 11, 2012, 06:56). |
| AMA | EC. Acronym Geek. February 11, 2012, 06:56. Available at: http://www.acronymgeek.com/EC. Accessed February 11, 2012, 06:56. |