| APA | QKD. (2012, February 13). In Acronym Geek. Retrieved 23:45, February 13, 2012, from http://www.acronymgeek.com/QKD |
| MLA | "QKD." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/QKD>. |
| MHRA | 'QKD', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/QKD> [accessed 13 February 2012] |
| Chicago | "QKD", http://www.acronymgeek.com/QKD (accessed February 13, 2012). |
| CBE/CSE | QKD [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/QKD. |
| Bluebook | QKD, http://www.acronymgeek.com/QKD (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QKD, http://www.acronymgeek.com/QKD (optional description here) (as of Feb. 13, 2012, 23:45). |
| AMA | QKD. Acronym Geek. February 13, 2012, 23:45. Available at: http://www.acronymgeek.com/QKD. Accessed February 13, 2012, 23:45. |