| APA | COSI. (2012, February 14). In Acronym Geek. Retrieved 23:42, February 14, 2012, from http://www.acronymgeek.com/COSI |
| MLA | "COSI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/COSI>. |
| MHRA | 'COSI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/COSI> [accessed 14 February 2012] |
| Chicago | "COSI", http://www.acronymgeek.com/COSI (accessed February 14, 2012). |
| CBE/CSE | COSI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/COSI. |
| Bluebook | COSI, http://www.acronymgeek.com/COSI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, COSI, http://www.acronymgeek.com/COSI (optional description here) (as of Feb. 14, 2012, 23:42). |
| AMA | COSI. Acronym Geek. February 14, 2012, 23:42. Available at: http://www.acronymgeek.com/COSI. Accessed February 14, 2012, 23:42. |