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