| APA | C4F. (2012, February 13). In Acronym Geek. Retrieved 22:59, February 13, 2012, from http://www.acronymgeek.com/C4F |
| MLA | "C4F." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/C4F>. |
| MHRA | 'C4F', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/C4F> [accessed 13 February 2012] |
| Chicago | "C4F", http://www.acronymgeek.com/C4F (accessed February 13, 2012). |
| CBE/CSE | C4F [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/C4F. |
| Bluebook | C4F, http://www.acronymgeek.com/C4F (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, C4F, http://www.acronymgeek.com/C4F (optional description here) (as of Feb. 13, 2012, 22:59). |
| AMA | C4F. Acronym Geek. February 13, 2012, 22:59. Available at: http://www.acronymgeek.com/C4F. Accessed February 13, 2012, 22:59. |