| APA | QDCN. (2012, February 16). In Acronym Geek. Retrieved 00:11, February 16, 2012, from http://www.acronymgeek.com/QDCN |
| MLA | "QDCN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/QDCN>. |
| MHRA | 'QDCN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/QDCN> [accessed 16 February 2012] |
| Chicago | "QDCN", http://www.acronymgeek.com/QDCN (accessed February 16, 2012). |
| CBE/CSE | QDCN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/QDCN. |
| Bluebook | QDCN, http://www.acronymgeek.com/QDCN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QDCN, http://www.acronymgeek.com/QDCN (optional description here) (as of Feb. 16, 2012, 00:11). |
| AMA | QDCN. Acronym Geek. February 16, 2012, 00:11. Available at: http://www.acronymgeek.com/QDCN. Accessed February 16, 2012, 00:11. |