| APA | CI2. (2012, February 12). In Acronym Geek. Retrieved 06:59, February 12, 2012, from http://www.acronymgeek.com/CI2 |
| MLA | "CI2." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/CI2>. |
| MHRA | 'CI2', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/CI2> [accessed 12 February 2012] |
| Chicago | "CI2", http://www.acronymgeek.com/CI2 (accessed February 12, 2012). |
| CBE/CSE | CI2 [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/CI2. |
| Bluebook | CI2, http://www.acronymgeek.com/CI2 (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CI2, http://www.acronymgeek.com/CI2 (optional description here) (as of Feb. 12, 2012, 06:59). |
| AMA | CI2. Acronym Geek. February 12, 2012, 06:59. Available at: http://www.acronymgeek.com/CI2. Accessed February 12, 2012, 06:59. |