| APA | QTD. (2012, February 11). In Acronym Geek. Retrieved 22:35, February 11, 2012, from http://www.acronymgeek.com/QTD |
| MLA | "QTD." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/QTD>. |
| MHRA | 'QTD', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/QTD> [accessed 11 February 2012] |
| Chicago | "QTD", http://www.acronymgeek.com/QTD (accessed February 11, 2012). |
| CBE/CSE | QTD [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/QTD. |
| Bluebook | QTD, http://www.acronymgeek.com/QTD (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QTD, http://www.acronymgeek.com/QTD (optional description here) (as of Feb. 11, 2012, 22:35). |
| AMA | QTD. Acronym Geek. February 11, 2012, 22:35. Available at: http://www.acronymgeek.com/QTD. Accessed February 11, 2012, 22:35. |