| APA | CTD. (2012, February 13). In Acronym Geek. Retrieved 22:47, February 13, 2012, from http://www.acronymgeek.com/CTD |
| MLA | "CTD." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/CTD>. |
| MHRA | 'CTD', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/CTD> [accessed 13 February 2012] |
| Chicago | "CTD", http://www.acronymgeek.com/CTD (accessed February 13, 2012). |
| CBE/CSE | CTD [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/CTD. |
| Bluebook | CTD, http://www.acronymgeek.com/CTD (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CTD, http://www.acronymgeek.com/CTD (optional description here) (as of Feb. 13, 2012, 22:47). |
| AMA | CTD. Acronym Geek. February 13, 2012, 22:47. Available at: http://www.acronymgeek.com/CTD. Accessed February 13, 2012, 22:47. |