| APA | COSL. (2012, February 17). In Acronym Geek. Retrieved 01:50, February 17, 2012, from http://www.acronymgeek.com/COSL |
| MLA | "COSL." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/COSL>. |
| MHRA | 'COSL', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/COSL> [accessed 17 February 2012] |
| Chicago | "COSL", http://www.acronymgeek.com/COSL (accessed February 17, 2012). |
| CBE/CSE | COSL [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/COSL. |
| Bluebook | COSL, http://www.acronymgeek.com/COSL (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, COSL, http://www.acronymgeek.com/COSL (optional description here) (as of Feb. 17, 2012, 01:50). |
| AMA | COSL. Acronym Geek. February 17, 2012, 01:50. Available at: http://www.acronymgeek.com/COSL. Accessed February 17, 2012, 01:50. |