| APA | QSDU. (2012, February 14). In Acronym Geek. Retrieved 21:21, February 14, 2012, from http://www.acronymgeek.com/QSDU |
| MLA | "QSDU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/QSDU>. |
| MHRA | 'QSDU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/QSDU> [accessed 14 February 2012] |
| Chicago | "QSDU", http://www.acronymgeek.com/QSDU (accessed February 14, 2012). |
| CBE/CSE | QSDU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/QSDU. |
| Bluebook | QSDU, http://www.acronymgeek.com/QSDU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QSDU, http://www.acronymgeek.com/QSDU (optional description here) (as of Feb. 14, 2012, 21:21). |
| AMA | QSDU. Acronym Geek. February 14, 2012, 21:21. Available at: http://www.acronymgeek.com/QSDU. Accessed February 14, 2012, 21:21. |