| APA | EEI. (2012, February 10). In Acronym Geek. Retrieved 10:50, February 10, 2012, from http://www.acronymgeek.com/EEI |
| MLA | "EEI." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/EEI>. |
| MHRA | 'EEI', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/EEI> [accessed 10 February 2012] |
| Chicago | "EEI", http://www.acronymgeek.com/EEI (accessed February 10, 2012). |
| CBE/CSE | EEI [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/EEI. |
| Bluebook | EEI, http://www.acronymgeek.com/EEI (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EEI, http://www.acronymgeek.com/EEI (optional description here) (as of Feb. 10, 2012, 10:50). |
| AMA | EEI. Acronym Geek. February 10, 2012, 10:50. Available at: http://www.acronymgeek.com/EEI. Accessed February 10, 2012, 10:50. |