| APA | QED. (2012, February 10). In Acronym Geek. Retrieved 11:12, February 10, 2012, from http://www.acronymgeek.com/QED |
| MLA | "QED." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/QED>. |
| MHRA | 'QED', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/QED> [accessed 10 February 2012] |
| Chicago | "QED", http://www.acronymgeek.com/QED (accessed February 10, 2012). |
| CBE/CSE | QED [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/QED. |
| Bluebook | QED, http://www.acronymgeek.com/QED (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QED, http://www.acronymgeek.com/QED (optional description here) (as of Feb. 10, 2012, 11:12). |
| AMA | QED. Acronym Geek. February 10, 2012, 11:12. Available at: http://www.acronymgeek.com/QED. Accessed February 10, 2012, 11:12. |