| APA | QI. (2012, February 10). In Acronym Geek. Retrieved 10:34, February 10, 2012, from http://www.acronymgeek.com/QI |
| MLA | "QI." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/QI>. |
| MHRA | 'QI', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/QI> [accessed 10 February 2012] |
| Chicago | "QI", http://www.acronymgeek.com/QI (accessed February 10, 2012). |
| CBE/CSE | QI [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/QI. |
| Bluebook | QI, http://www.acronymgeek.com/QI (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QI, http://www.acronymgeek.com/QI (optional description here) (as of Feb. 10, 2012, 10:34). |
| AMA | QI. Acronym Geek. February 10, 2012, 10:34. Available at: http://www.acronymgeek.com/QI. Accessed February 10, 2012, 10:34. |