| APA | TTDX. (2012, February 15). In Acronym Geek. Retrieved 16:29, February 15, 2012, from http://www.acronymgeek.com/TTDX |
| MLA | "TTDX." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/TTDX>. |
| MHRA | 'TTDX', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/TTDX> [accessed 15 February 2012] |
| Chicago | "TTDX", http://www.acronymgeek.com/TTDX (accessed February 15, 2012). |
| CBE/CSE | TTDX [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/TTDX. |
| Bluebook | TTDX, http://www.acronymgeek.com/TTDX (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, TTDX, http://www.acronymgeek.com/TTDX (optional description here) (as of Feb. 15, 2012, 16:29). |
| AMA | TTDX. Acronym Geek. February 15, 2012, 16:29. Available at: http://www.acronymgeek.com/TTDX. Accessed February 15, 2012, 16:29. |