| APA | OBA. (2012, February 14). In Acronym Geek. Retrieved 07:04, February 14, 2012, from http://www.acronymgeek.com/OBA |
| MLA | "OBA." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OBA>. |
| MHRA | 'OBA', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OBA> [accessed 14 February 2012] |
| Chicago | "OBA", http://www.acronymgeek.com/OBA (accessed February 14, 2012). |
| CBE/CSE | OBA [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OBA. |
| Bluebook | OBA, http://www.acronymgeek.com/OBA (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OBA, http://www.acronymgeek.com/OBA (optional description here) (as of Feb. 14, 2012, 07:04). |
| AMA | OBA. Acronym Geek. February 14, 2012, 07:04. Available at: http://www.acronymgeek.com/OBA. Accessed February 14, 2012, 07:04. |