| APA | FSYS. (2012, February 11). In Acronym Geek. Retrieved 19:11, February 11, 2012, from http://www.acronymgeek.com/FSYS |
| MLA | "FSYS." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/FSYS>. |
| MHRA | 'FSYS', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/FSYS> [accessed 11 February 2012] |
| Chicago | "FSYS", http://www.acronymgeek.com/FSYS (accessed February 11, 2012). |
| CBE/CSE | FSYS [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/FSYS. |
| Bluebook | FSYS, http://www.acronymgeek.com/FSYS (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FSYS, http://www.acronymgeek.com/FSYS (optional description here) (as of Feb. 11, 2012, 19:11). |
| AMA | FSYS. Acronym Geek. February 11, 2012, 19:11. Available at: http://www.acronymgeek.com/FSYS. Accessed February 11, 2012, 19:11. |