| Style | Reference Text |
|---|
| APA | O/S. (2013, May 20). In All Acronyms. Retrieved 18:40, May 20, 2013, from http://www.all-acronyms.com/O%2FS |
| MLA | "O/S." All Acronyms. 20 May 2013, 18:40. All Acronyms. 20 May 2013 <http://www.all-acronyms.com/O%2FS>. |
| MHRA | 'O/S', All Acronyms, 20 May 2013, 18:40, <http://www.all-acronyms.com/O%2FS> [accessed 20 May 2013] |
| Chicago | "O/S," http://www.all-acronyms.com/O%2FS (accessed May 20, 2013). |
| CBE/CSE | O/S [Internet]. All Acronyms; 2013 May 20, 18:40 [cited 2013 May 20]. Available from: http://www.all-acronyms.com/O%2FS. |
| Bluebook | O/S, http://www.all-acronyms.com/O%2FS (last visited May 20, 2013). |
| Bluebook: Harvard JOLT | See All Acronyms, O/S, http://www.all-acronyms.com/O%2FS (optional description here) (as of May. 20, 2013, 18:40). |
| AMA | O/S. All Acronyms. May 20, 2013, 18:40. Available at: http://www.all-acronyms.com/O%2FS. Accessed May 20, 2013. |