| APA | IU. (2012, February 9). In Acronym Geek. Retrieved 17:46, February 9, 2012, from http://www.acronymgeek.com/IU |
| MLA | "IU." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/IU>. |
| MHRA | 'IU', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/IU> [accessed 9 February 2012] |
| Chicago | "IU", http://www.acronymgeek.com/IU (accessed February 9, 2012). |
| CBE/CSE | IU [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/IU. |
| Bluebook | IU, http://www.acronymgeek.com/IU (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IU, http://www.acronymgeek.com/IU (optional description here) (as of Feb. 9, 2012, 17:46). |
| AMA | IU. Acronym Geek. February 9, 2012, 17:46. Available at: http://www.acronymgeek.com/IU. Accessed February 9, 2012, 17:46. |