| APA | OCOA. (2012, February 15). In Acronym Geek. Retrieved 10:21, February 15, 2012, from http://www.acronymgeek.com/OCOA |
| MLA | "OCOA." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OCOA>. |
| MHRA | 'OCOA', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OCOA> [accessed 15 February 2012] |
| Chicago | "OCOA", http://www.acronymgeek.com/OCOA (accessed February 15, 2012). |
| CBE/CSE | OCOA [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OCOA. |
| Bluebook | OCOA, http://www.acronymgeek.com/OCOA (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OCOA, http://www.acronymgeek.com/OCOA (optional description here) (as of Feb. 15, 2012, 10:21). |
| AMA | OCOA. Acronym Geek. February 15, 2012, 10:21. Available at: http://www.acronymgeek.com/OCOA. Accessed February 15, 2012, 10:21. |