| APA | SFS. (2012, February 15). In Acronym Geek. Retrieved 03:25, February 15, 2012, from http://www.acronymgeek.com/SFS |
| MLA | "SFS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/SFS>. |
| MHRA | 'SFS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/SFS> [accessed 15 February 2012] |
| Chicago | "SFS", http://www.acronymgeek.com/SFS (accessed February 15, 2012). |
| CBE/CSE | SFS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/SFS. |
| Bluebook | SFS, http://www.acronymgeek.com/SFS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SFS, http://www.acronymgeek.com/SFS (optional description here) (as of Feb. 15, 2012, 03:25). |
| AMA | SFS. Acronym Geek. February 15, 2012, 03:25. Available at: http://www.acronymgeek.com/SFS. Accessed February 15, 2012, 03:25. |