| APA | SDYD. (2012, February 16). In Acronym Geek. Retrieved 00:51, February 16, 2012, from http://www.acronymgeek.com/SDYD |
| MLA | "SDYD." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SDYD>. |
| MHRA | 'SDYD', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SDYD> [accessed 16 February 2012] |
| Chicago | "SDYD", http://www.acronymgeek.com/SDYD (accessed February 16, 2012). |
| CBE/CSE | SDYD [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SDYD. |
| Bluebook | SDYD, http://www.acronymgeek.com/SDYD (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDYD, http://www.acronymgeek.com/SDYD (optional description here) (as of Feb. 16, 2012, 00:51). |
| AMA | SDYD. Acronym Geek. February 16, 2012, 00:51. Available at: http://www.acronymgeek.com/SDYD. Accessed February 16, 2012, 00:51. |