| Style | Reference Text |
|---|
| APA | EI. (2009, July 4). In All Acronyms. Retrieved 03:12, July 4, 2009, from http://www.all-acronyms.com/EI |
| MLA | "EI." All Acronyms. 4 Jul 2009, 03:12. All Acronyms. 4 Jul 2009 <http://www.all-acronyms.com/EI>. |
| MHRA | 'EI', All Acronyms, 4 July 2009, 03:12, <http://www.all-acronyms.com/EI> [accessed 4 July 2009] |
| Chicago | "EI," http://www.all-acronyms.com/EI (accessed July 4, 2009). |
| CBE/CSE | EI [Internet]. All Acronyms; 2009 Jul 4, 03:12 [cited 2009 Jul 4]. Available from: http://www.all-acronyms.com/EI. |
| Bluebook | EI, http://www.all-acronyms.com/EI (last visited July 4, 2009). |
| Bluebook: Harvard JOLT | See All Acronyms, EI, http://www.all-acronyms.com/EI (optional description here) (as of Jul. 4, 2009, 03:12). |
| AMA | EI. All Acronyms. July 4, 2009, 03:12. Available at: http://www.all-acronyms.com/EI. Accessed July 4, 2009. |