| APA | OFS. (2012, February 9). In Acronym Geek. Retrieved 02:10, February 9, 2012, from http://www.acronymgeek.com/OFS |
| MLA | "OFS." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/OFS>. |
| MHRA | 'OFS', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/OFS> [accessed 9 February 2012] |
| Chicago | "OFS", http://www.acronymgeek.com/OFS (accessed February 9, 2012). |
| CBE/CSE | OFS [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/OFS. |
| Bluebook | OFS, http://www.acronymgeek.com/OFS (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OFS, http://www.acronymgeek.com/OFS (optional description here) (as of Feb. 9, 2012, 02:10). |
| AMA | OFS. Acronym Geek. February 9, 2012, 02:10. Available at: http://www.acronymgeek.com/OFS. Accessed February 9, 2012, 02:10. |