| APA | SPQD. (2012, February 16). In Acronym Geek. Retrieved 04:15, February 16, 2012, from http://www.acronymgeek.com/SPQD |
| MLA | "SPQD." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SPQD>. |
| MHRA | 'SPQD', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SPQD> [accessed 16 February 2012] |
| Chicago | "SPQD", http://www.acronymgeek.com/SPQD (accessed February 16, 2012). |
| CBE/CSE | SPQD [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SPQD. |
| Bluebook | SPQD, http://www.acronymgeek.com/SPQD (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPQD, http://www.acronymgeek.com/SPQD (optional description here) (as of Feb. 16, 2012, 04:15). |
| AMA | SPQD. Acronym Geek. February 16, 2012, 04:15. Available at: http://www.acronymgeek.com/SPQD. Accessed February 16, 2012, 04:15. |