| APA | YSF. (2012, February 14). In Acronym Geek. Retrieved 07:15, February 14, 2012, from http://www.acronymgeek.com/YSF |
| MLA | "YSF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/YSF>. |
| MHRA | 'YSF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/YSF> [accessed 14 February 2012] |
| Chicago | "YSF", http://www.acronymgeek.com/YSF (accessed February 14, 2012). |
| CBE/CSE | YSF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/YSF. |
| Bluebook | YSF, http://www.acronymgeek.com/YSF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, YSF, http://www.acronymgeek.com/YSF (optional description here) (as of Feb. 14, 2012, 07:15). |
| AMA | YSF. Acronym Geek. February 14, 2012, 07:15. Available at: http://www.acronymgeek.com/YSF. Accessed February 14, 2012, 07:15. |