| APA | QDDE. (2012, February 16). In Acronym Geek. Retrieved 16:29, February 16, 2012, from http://www.acronymgeek.com/QDDE |
| MLA | "QDDE." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/QDDE>. |
| MHRA | 'QDDE', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/QDDE> [accessed 16 February 2012] |
| Chicago | "QDDE", http://www.acronymgeek.com/QDDE (accessed February 16, 2012). |
| CBE/CSE | QDDE [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/QDDE. |
| Bluebook | QDDE, http://www.acronymgeek.com/QDDE (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QDDE, http://www.acronymgeek.com/QDDE (optional description here) (as of Feb. 16, 2012, 16:29). |
| AMA | QDDE. Acronym Geek. February 16, 2012, 16:29. Available at: http://www.acronymgeek.com/QDDE. Accessed February 16, 2012, 16:29. |