| APA | IIO. (2012, February 14). In Acronym Geek. Retrieved 19:16, February 14, 2012, from http://www.acronymgeek.com/IIO |
| MLA | "IIO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/IIO>. |
| MHRA | 'IIO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/IIO> [accessed 14 February 2012] |
| Chicago | "IIO", http://www.acronymgeek.com/IIO (accessed February 14, 2012). |
| CBE/CSE | IIO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/IIO. |
| Bluebook | IIO, http://www.acronymgeek.com/IIO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IIO, http://www.acronymgeek.com/IIO (optional description here) (as of Feb. 14, 2012, 19:16). |
| AMA | IIO. Acronym Geek. February 14, 2012, 19:16. Available at: http://www.acronymgeek.com/IIO. Accessed February 14, 2012, 19:16. |