| APA | ECS. (2012, February 9). In Acronym Geek. Retrieved 13:02, February 9, 2012, from http://www.acronymgeek.com/ECS |
| MLA | "ECS." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/ECS>. |
| MHRA | 'ECS', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/ECS> [accessed 9 February 2012] |
| Chicago | "ECS", http://www.acronymgeek.com/ECS (accessed February 9, 2012). |
| CBE/CSE | ECS [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/ECS. |
| Bluebook | ECS, http://www.acronymgeek.com/ECS (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ECS, http://www.acronymgeek.com/ECS (optional description here) (as of Feb. 9, 2012, 13:02). |
| AMA | ECS. Acronym Geek. February 9, 2012, 13:02. Available at: http://www.acronymgeek.com/ECS. Accessed February 9, 2012, 13:02. |