| APA | QSDE. (2012, February 15). In Acronym Geek. Retrieved 16:24, February 15, 2012, from http://www.acronymgeek.com/QSDE |
| MLA | "QSDE." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/QSDE>. |
| MHRA | 'QSDE', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/QSDE> [accessed 15 February 2012] |
| Chicago | "QSDE", http://www.acronymgeek.com/QSDE (accessed February 15, 2012). |
| CBE/CSE | QSDE [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/QSDE. |
| Bluebook | QSDE, http://www.acronymgeek.com/QSDE (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QSDE, http://www.acronymgeek.com/QSDE (optional description here) (as of Feb. 15, 2012, 16:24). |
| AMA | QSDE. Acronym Geek. February 15, 2012, 16:24. Available at: http://www.acronymgeek.com/QSDE. Accessed February 15, 2012, 16:24. |