| APA | OAS. (2012, February 14). In Acronym Geek. Retrieved 07:01, February 14, 2012, from http://www.acronymgeek.com/OAS |
| MLA | "OAS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OAS>. |
| MHRA | 'OAS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OAS> [accessed 14 February 2012] |
| Chicago | "OAS", http://www.acronymgeek.com/OAS (accessed February 14, 2012). |
| CBE/CSE | OAS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OAS. |
| Bluebook | OAS, http://www.acronymgeek.com/OAS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OAS, http://www.acronymgeek.com/OAS (optional description here) (as of Feb. 14, 2012, 07:01). |
| AMA | OAS. Acronym Geek. February 14, 2012, 07:01. Available at: http://www.acronymgeek.com/OAS. Accessed February 14, 2012, 07:01. |