| APA | OKCA. (2012, February 16). In Acronym Geek. Retrieved 05:18, February 16, 2012, from http://www.acronymgeek.com/OKCA |
| MLA | "OKCA." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OKCA>. |
| MHRA | 'OKCA', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OKCA> [accessed 16 February 2012] |
| Chicago | "OKCA", http://www.acronymgeek.com/OKCA (accessed February 16, 2012). |
| CBE/CSE | OKCA [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OKCA. |
| Bluebook | OKCA, http://www.acronymgeek.com/OKCA (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OKCA, http://www.acronymgeek.com/OKCA (optional description here) (as of Feb. 16, 2012, 05:18). |
| AMA | OKCA. Acronym Geek. February 16, 2012, 05:18. Available at: http://www.acronymgeek.com/OKCA. Accessed February 16, 2012, 05:18. |