| APA | C4L. (2012, February 13). In Acronym Geek. Retrieved 23:47, February 13, 2012, from http://www.acronymgeek.com/C4L |
| MLA | "C4L." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/C4L>. |
| MHRA | 'C4L', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/C4L> [accessed 13 February 2012] |
| Chicago | "C4L", http://www.acronymgeek.com/C4L (accessed February 13, 2012). |
| CBE/CSE | C4L [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/C4L. |
| Bluebook | C4L, http://www.acronymgeek.com/C4L (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, C4L, http://www.acronymgeek.com/C4L (optional description here) (as of Feb. 13, 2012, 23:47). |
| AMA | C4L. Acronym Geek. February 13, 2012, 23:47. Available at: http://www.acronymgeek.com/C4L. Accessed February 13, 2012, 23:47. |