| APA | TDI. (2012, February 14). In Acronym Geek. Retrieved 06:46, February 14, 2012, from http://www.acronymgeek.com/TDI |
| MLA | "TDI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/TDI>. |
| MHRA | 'TDI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/TDI> [accessed 14 February 2012] |
| Chicago | "TDI", http://www.acronymgeek.com/TDI (accessed February 14, 2012). |
| CBE/CSE | TDI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/TDI. |
| Bluebook | TDI, http://www.acronymgeek.com/TDI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, TDI, http://www.acronymgeek.com/TDI (optional description here) (as of Feb. 14, 2012, 06:46). |
| AMA | TDI. Acronym Geek. February 14, 2012, 06:46. Available at: http://www.acronymgeek.com/TDI. Accessed February 14, 2012, 06:46. |