| APA | EC. (2012, February 16). In Acronym Geek. Retrieved 11:34, February 16, 2012, from http://www.acronymgeek.com/EC/4 |
| MLA | "EC." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/EC/4>. |
| MHRA | 'EC', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/EC/4> [accessed 16 February 2012] |
| Chicago | "EC", http://www.acronymgeek.com/EC/4 (accessed February 16, 2012). |
| CBE/CSE | EC [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/EC/4. |
| Bluebook | EC, http://www.acronymgeek.com/EC/4 (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EC, http://www.acronymgeek.com/EC/4 (optional description here) (as of Feb. 16, 2012, 11:34). |
| AMA | EC. Acronym Geek. February 16, 2012, 11:34. Available at: http://www.acronymgeek.com/EC/4. Accessed February 16, 2012, 11:34. |