| APA | FO/FS. (2012, February 11). In Acronym Geek. Retrieved 17:46, February 11, 2012, from http://www.acronymgeek.com/FO/FS |
| MLA | "FO/FS." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/FO/FS>. |
| MHRA | 'FO/FS', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/FO/FS> [accessed 11 February 2012] |
| Chicago | "FO/FS", http://www.acronymgeek.com/FO/FS (accessed February 11, 2012). |
| CBE/CSE | FO/FS [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/FO/FS. |
| Bluebook | FO/FS, http://www.acronymgeek.com/FO/FS (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FO/FS, http://www.acronymgeek.com/FO/FS (optional description here) (as of Feb. 11, 2012, 17:46). |
| AMA | FO/FS. Acronym Geek. February 11, 2012, 17:46. Available at: http://www.acronymgeek.com/FO/FS. Accessed February 11, 2012, 17:46. |