| APA | CI. (2012, February 14). In Acronym Geek. Retrieved 06:04, February 14, 2012, from http://www.acronymgeek.com/CI |
| MLA | "CI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/CI>. |
| MHRA | 'CI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/CI> [accessed 14 February 2012] |
| Chicago | "CI", http://www.acronymgeek.com/CI (accessed February 14, 2012). |
| CBE/CSE | CI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/CI. |
| Bluebook | CI, http://www.acronymgeek.com/CI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CI, http://www.acronymgeek.com/CI (optional description here) (as of Feb. 14, 2012, 06:04). |
| AMA | CI. Acronym Geek. February 14, 2012, 06:04. Available at: http://www.acronymgeek.com/CI. Accessed February 14, 2012, 06:04. |