| APA | QSDN. (2012, February 17). In Acronym Geek. Retrieved 06:40, February 17, 2012, from http://www.acronymgeek.com/QSDN |
| MLA | "QSDN." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/QSDN>. |
| MHRA | 'QSDN', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/QSDN> [accessed 17 February 2012] |
| Chicago | "QSDN", http://www.acronymgeek.com/QSDN (accessed February 17, 2012). |
| CBE/CSE | QSDN [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/QSDN. |
| Bluebook | QSDN, http://www.acronymgeek.com/QSDN (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QSDN, http://www.acronymgeek.com/QSDN (optional description here) (as of Feb. 17, 2012, 06:40). |
| AMA | QSDN. Acronym Geek. February 17, 2012, 06:40. Available at: http://www.acronymgeek.com/QSDN. Accessed February 17, 2012, 06:40. |