| APA | ECUI. (2012, February 15). In Acronym Geek. Retrieved 06:54, February 15, 2012, from http://www.acronymgeek.com/ECUI |
| MLA | "ECUI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ECUI>. |
| MHRA | 'ECUI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ECUI> [accessed 15 February 2012] |
| Chicago | "ECUI", http://www.acronymgeek.com/ECUI (accessed February 15, 2012). |
| CBE/CSE | ECUI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ECUI. |
| Bluebook | ECUI, http://www.acronymgeek.com/ECUI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ECUI, http://www.acronymgeek.com/ECUI (optional description here) (as of Feb. 15, 2012, 06:54). |
| AMA | ECUI. Acronym Geek. February 15, 2012, 06:54. Available at: http://www.acronymgeek.com/ECUI. Accessed February 15, 2012, 06:54. |