| APA | OKB. (2012, February 14). In Acronym Geek. Retrieved 04:27, February 14, 2012, from http://www.acronymgeek.com/OKB |
| MLA | "OKB." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OKB>. |
| MHRA | 'OKB', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OKB> [accessed 14 February 2012] |
| Chicago | "OKB", http://www.acronymgeek.com/OKB (accessed February 14, 2012). |
| CBE/CSE | OKB [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OKB. |
| Bluebook | OKB, http://www.acronymgeek.com/OKB (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OKB, http://www.acronymgeek.com/OKB (optional description here) (as of Feb. 14, 2012, 04:27). |
| AMA | OKB. Acronym Geek. February 14, 2012, 04:27. Available at: http://www.acronymgeek.com/OKB. Accessed February 14, 2012, 04:27. |