| APA | CLS. (2012, February 14). In Acronym Geek. Retrieved 11:04, February 14, 2012, from http://www.acronymgeek.com/CLS |
| MLA | "CLS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/CLS>. |
| MHRA | 'CLS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/CLS> [accessed 14 February 2012] |
| Chicago | "CLS", http://www.acronymgeek.com/CLS (accessed February 14, 2012). |
| CBE/CSE | CLS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/CLS. |
| Bluebook | CLS, http://www.acronymgeek.com/CLS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CLS, http://www.acronymgeek.com/CLS (optional description here) (as of Feb. 14, 2012, 11:04). |
| AMA | CLS. Acronym Geek. February 14, 2012, 11:04. Available at: http://www.acronymgeek.com/CLS. Accessed February 14, 2012, 11:04. |