| APA | SF/O. (2012, February 12). In Acronym Geek. Retrieved 15:34, February 12, 2012, from http://www.acronymgeek.com/SF/O |
| MLA | "SF/O." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/SF/O>. |
| MHRA | 'SF/O', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/SF/O> [accessed 12 February 2012] |
| Chicago | "SF/O", http://www.acronymgeek.com/SF/O (accessed February 12, 2012). |
| CBE/CSE | SF/O [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/SF/O. |
| Bluebook | SF/O, http://www.acronymgeek.com/SF/O (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SF/O, http://www.acronymgeek.com/SF/O (optional description here) (as of Feb. 12, 2012, 15:34). |
| AMA | SF/O. Acronym Geek. February 12, 2012, 15:34. Available at: http://www.acronymgeek.com/SF/O. Accessed February 12, 2012, 15:34. |