| APA | MEI. (2012, February 14). In Acronym Geek. Retrieved 19:32, February 14, 2012, from http://www.acronymgeek.com/MEI |
| MLA | "MEI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/MEI>. |
| MHRA | 'MEI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/MEI> [accessed 14 February 2012] |
| Chicago | "MEI", http://www.acronymgeek.com/MEI (accessed February 14, 2012). |
| CBE/CSE | MEI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/MEI. |
| Bluebook | MEI, http://www.acronymgeek.com/MEI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, MEI, http://www.acronymgeek.com/MEI (optional description here) (as of Feb. 14, 2012, 19:32). |
| AMA | MEI. Acronym Geek. February 14, 2012, 19:32. Available at: http://www.acronymgeek.com/MEI. Accessed February 14, 2012, 19:32. |