| APA | SDYS. (2012, February 15). In Acronym Geek. Retrieved 22:39, February 15, 2012, from http://www.acronymgeek.com/SDYS |
| MLA | "SDYS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/SDYS>. |
| MHRA | 'SDYS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/SDYS> [accessed 15 February 2012] |
| Chicago | "SDYS", http://www.acronymgeek.com/SDYS (accessed February 15, 2012). |
| CBE/CSE | SDYS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/SDYS. |
| Bluebook | SDYS, http://www.acronymgeek.com/SDYS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDYS, http://www.acronymgeek.com/SDYS (optional description here) (as of Feb. 15, 2012, 22:39). |
| AMA | SDYS. Acronym Geek. February 15, 2012, 22:39. Available at: http://www.acronymgeek.com/SDYS. Accessed February 15, 2012, 22:39. |