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