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