| APA | EI&I. (2012, February 11). In Acronym Geek. Retrieved 17:37, February 11, 2012, from http://www.acronymgeek.com/EI&I |
| MLA | "EI&I." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EI&I>. |
| MHRA | 'EI&I', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EI&I> [accessed 11 February 2012] |
| Chicago | "EI&I", http://www.acronymgeek.com/EI&I (accessed February 11, 2012). |
| CBE/CSE | EI&I [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EI&I. |
| Bluebook | EI&I, http://www.acronymgeek.com/EI&I (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EI&I, http://www.acronymgeek.com/EI&I (optional description here) (as of Feb. 11, 2012, 17:37). |
| AMA | EI&I. Acronym Geek. February 11, 2012, 17:37. Available at: http://www.acronymgeek.com/EI&I. Accessed February 11, 2012, 17:37. |