| APA | SEI. (2012, February 9). In Acronym Geek. Retrieved 19:22, February 9, 2012, from http://www.acronymgeek.com/SEI |
| MLA | "SEI." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/SEI>. |
| MHRA | 'SEI', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/SEI> [accessed 9 February 2012] |
| Chicago | "SEI", http://www.acronymgeek.com/SEI (accessed February 9, 2012). |
| CBE/CSE | SEI [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/SEI. |
| Bluebook | SEI, http://www.acronymgeek.com/SEI (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SEI, http://www.acronymgeek.com/SEI (optional description here) (as of Feb. 9, 2012, 19:22). |
| AMA | SEI. Acronym Geek. February 9, 2012, 19:22. Available at: http://www.acronymgeek.com/SEI. Accessed February 9, 2012, 19:22. |