| APA | ECDU. (2012, February 10). In Acronym Geek. Retrieved 17:44, February 10, 2012, from http://www.acronymgeek.com/ECDU |
| MLA | "ECDU." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/ECDU>. |
| MHRA | 'ECDU', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/ECDU> [accessed 10 February 2012] |
| Chicago | "ECDU", http://www.acronymgeek.com/ECDU (accessed February 10, 2012). |
| CBE/CSE | ECDU [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/ECDU. |
| Bluebook | ECDU, http://www.acronymgeek.com/ECDU (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ECDU, http://www.acronymgeek.com/ECDU (optional description here) (as of Feb. 10, 2012, 17:44). |
| AMA | ECDU. Acronym Geek. February 10, 2012, 17:44. Available at: http://www.acronymgeek.com/ECDU. Accessed February 10, 2012, 17:44. |