| APA | CTFD. (2012, February 10). In Acronym Geek. Retrieved 13:09, February 10, 2012, from http://www.acronymgeek.com/CTFD |
| MLA | "CTFD." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/CTFD>. |
| MHRA | 'CTFD', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/CTFD> [accessed 10 February 2012] |
| Chicago | "CTFD", http://www.acronymgeek.com/CTFD (accessed February 10, 2012). |
| CBE/CSE | CTFD [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/CTFD. |
| Bluebook | CTFD, http://www.acronymgeek.com/CTFD (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CTFD, http://www.acronymgeek.com/CTFD (optional description here) (as of Feb. 10, 2012, 13:09). |
| AMA | CTFD. Acronym Geek. February 10, 2012, 13:09. Available at: http://www.acronymgeek.com/CTFD. Accessed February 10, 2012, 13:09. |