| APA | SDYO. (2012, February 16). In Acronym Geek. Retrieved 13:50, February 16, 2012, from http://www.acronymgeek.com/SDYO |
| MLA | "SDYO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SDYO>. |
| MHRA | 'SDYO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SDYO> [accessed 16 February 2012] |
| Chicago | "SDYO", http://www.acronymgeek.com/SDYO (accessed February 16, 2012). |
| CBE/CSE | SDYO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SDYO. |
| Bluebook | SDYO, http://www.acronymgeek.com/SDYO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDYO, http://www.acronymgeek.com/SDYO (optional description here) (as of Feb. 16, 2012, 13:50). |
| AMA | SDYO. Acronym Geek. February 16, 2012, 13:50. Available at: http://www.acronymgeek.com/SDYO. Accessed February 16, 2012, 13:50. |