| APA | OAOO. (2012, February 11). In Acronym Geek. Retrieved 19:49, February 11, 2012, from http://www.acronymgeek.com/OAOO |
| MLA | "OAOO." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/OAOO>. |
| MHRA | 'OAOO', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/OAOO> [accessed 11 February 2012] |
| Chicago | "OAOO", http://www.acronymgeek.com/OAOO (accessed February 11, 2012). |
| CBE/CSE | OAOO [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/OAOO. |
| Bluebook | OAOO, http://www.acronymgeek.com/OAOO (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OAOO, http://www.acronymgeek.com/OAOO (optional description here) (as of Feb. 11, 2012, 19:49). |
| AMA | OAOO. Acronym Geek. February 11, 2012, 19:49. Available at: http://www.acronymgeek.com/OAOO. Accessed February 11, 2012, 19:49. |