| APA | IEIS. (2012, February 17). In Acronym Geek. Retrieved 06:25, February 17, 2012, from http://www.acronymgeek.com/IEIS |
| MLA | "IEIS." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/IEIS>. |
| MHRA | 'IEIS', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/IEIS> [accessed 17 February 2012] |
| Chicago | "IEIS", http://www.acronymgeek.com/IEIS (accessed February 17, 2012). |
| CBE/CSE | IEIS [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/IEIS. |
| Bluebook | IEIS, http://www.acronymgeek.com/IEIS (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IEIS, http://www.acronymgeek.com/IEIS (optional description here) (as of Feb. 17, 2012, 06:25). |
| AMA | IEIS. Acronym Geek. February 17, 2012, 06:25. Available at: http://www.acronymgeek.com/IEIS. Accessed February 17, 2012, 06:25. |