| APA | C4ET. (2012, February 15). In Acronym Geek. Retrieved 20:52, February 15, 2012, from http://www.acronymgeek.com/C4ET |
| MLA | "C4ET." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/C4ET>. |
| MHRA | 'C4ET', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/C4ET> [accessed 15 February 2012] |
| Chicago | "C4ET", http://www.acronymgeek.com/C4ET (accessed February 15, 2012). |
| CBE/CSE | C4ET [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/C4ET. |
| Bluebook | C4ET, http://www.acronymgeek.com/C4ET (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, C4ET, http://www.acronymgeek.com/C4ET (optional description here) (as of Feb. 15, 2012, 20:52). |
| AMA | C4ET. Acronym Geek. February 15, 2012, 20:52. Available at: http://www.acronymgeek.com/C4ET. Accessed February 15, 2012, 20:52. |