| APA | SYO. (2012, February 15). In Acronym Geek. Retrieved 03:27, February 15, 2012, from http://www.acronymgeek.com/SYO |
| MLA | "SYO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/SYO>. |
| MHRA | 'SYO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/SYO> [accessed 15 February 2012] |
| Chicago | "SYO", http://www.acronymgeek.com/SYO (accessed February 15, 2012). |
| CBE/CSE | SYO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/SYO. |
| Bluebook | SYO, http://www.acronymgeek.com/SYO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SYO, http://www.acronymgeek.com/SYO (optional description here) (as of Feb. 15, 2012, 03:27). |
| AMA | SYO. Acronym Geek. February 15, 2012, 03:27. Available at: http://www.acronymgeek.com/SYO. Accessed February 15, 2012, 03:27. |