| APA | QHSD. (2012, February 16). In Acronym Geek. Retrieved 22:51, February 16, 2012, from http://www.acronymgeek.com/QHSD |
| MLA | "QHSD." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/QHSD>. |
| MHRA | 'QHSD', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/QHSD> [accessed 16 February 2012] |
| Chicago | "QHSD", http://www.acronymgeek.com/QHSD (accessed February 16, 2012). |
| CBE/CSE | QHSD [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/QHSD. |
| Bluebook | QHSD, http://www.acronymgeek.com/QHSD (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, QHSD, http://www.acronymgeek.com/QHSD (optional description here) (as of Feb. 16, 2012, 22:51). |
| AMA | QHSD. Acronym Geek. February 16, 2012, 22:51. Available at: http://www.acronymgeek.com/QHSD. Accessed February 16, 2012, 22:51. |