| APA | SDDQ. (2012, February 17). In Acronym Geek. Retrieved 02:16, February 17, 2012, from http://www.acronymgeek.com/SDDQ |
| MLA | "SDDQ." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/SDDQ>. |
| MHRA | 'SDDQ', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/SDDQ> [accessed 17 February 2012] |
| Chicago | "SDDQ", http://www.acronymgeek.com/SDDQ (accessed February 17, 2012). |
| CBE/CSE | SDDQ [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/SDDQ. |
| Bluebook | SDDQ, http://www.acronymgeek.com/SDDQ (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDDQ, http://www.acronymgeek.com/SDDQ (optional description here) (as of Feb. 17, 2012, 02:16). |
| AMA | SDDQ. Acronym Geek. February 17, 2012, 02:16. Available at: http://www.acronymgeek.com/SDDQ. Accessed February 17, 2012, 02:16. |