| APA | UEI. (2012, February 14). In Acronym Geek. Retrieved 04:22, February 14, 2012, from http://www.acronymgeek.com/UEI |
| MLA | "UEI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/UEI>. |
| MHRA | 'UEI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/UEI> [accessed 14 February 2012] |
| Chicago | "UEI", http://www.acronymgeek.com/UEI (accessed February 14, 2012). |
| CBE/CSE | UEI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/UEI. |
| Bluebook | UEI, http://www.acronymgeek.com/UEI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UEI, http://www.acronymgeek.com/UEI (optional description here) (as of Feb. 14, 2012, 04:22). |
| AMA | UEI. Acronym Geek. February 14, 2012, 04:22. Available at: http://www.acronymgeek.com/UEI. Accessed February 14, 2012, 04:22. |