| APA | SFO. (2012, February 11). In Acronym Geek. Retrieved 22:25, February 11, 2012, from http://www.acronymgeek.com/SFO |
| MLA | "SFO." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/SFO>. |
| MHRA | 'SFO', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/SFO> [accessed 11 February 2012] |
| Chicago | "SFO", http://www.acronymgeek.com/SFO (accessed February 11, 2012). |
| CBE/CSE | SFO [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/SFO. |
| Bluebook | SFO, http://www.acronymgeek.com/SFO (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SFO, http://www.acronymgeek.com/SFO (optional description here) (as of Feb. 11, 2012, 22:25). |
| AMA | SFO. Acronym Geek. February 11, 2012, 22:25. Available at: http://www.acronymgeek.com/SFO. Accessed February 11, 2012, 22:25. |