| APA | IEU. (2012, February 13). In Acronym Geek. Retrieved 21:18, February 13, 2012, from http://www.acronymgeek.com/IEU |
| MLA | "IEU." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/IEU>. |
| MHRA | 'IEU', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/IEU> [accessed 13 February 2012] |
| Chicago | "IEU", http://www.acronymgeek.com/IEU (accessed February 13, 2012). |
| CBE/CSE | IEU [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/IEU. |
| Bluebook | IEU, http://www.acronymgeek.com/IEU (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IEU, http://www.acronymgeek.com/IEU (optional description here) (as of Feb. 13, 2012, 21:18). |
| AMA | IEU. Acronym Geek. February 13, 2012, 21:18. Available at: http://www.acronymgeek.com/IEU. Accessed February 13, 2012, 21:18. |