| APA | OYSF. (2012, February 16). In Acronym Geek. Retrieved 03:56, February 16, 2012, from http://www.acronymgeek.com/OYSF |
| MLA | "OYSF." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OYSF>. |
| MHRA | 'OYSF', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OYSF> [accessed 16 February 2012] |
| Chicago | "OYSF", http://www.acronymgeek.com/OYSF (accessed February 16, 2012). |
| CBE/CSE | OYSF [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OYSF. |
| Bluebook | OYSF, http://www.acronymgeek.com/OYSF (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OYSF, http://www.acronymgeek.com/OYSF (optional description here) (as of Feb. 16, 2012, 03:56). |
| AMA | OYSF. Acronym Geek. February 16, 2012, 03:56. Available at: http://www.acronymgeek.com/OYSF. Accessed February 16, 2012, 03:56. |