| APA | OBI. (2012, February 14). In Acronym Geek. Retrieved 07:40, February 14, 2012, from http://www.acronymgeek.com/OBI |
| MLA | "OBI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OBI>. |
| MHRA | 'OBI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OBI> [accessed 14 February 2012] |
| Chicago | "OBI", http://www.acronymgeek.com/OBI (accessed February 14, 2012). |
| CBE/CSE | OBI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OBI. |
| Bluebook | OBI, http://www.acronymgeek.com/OBI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OBI, http://www.acronymgeek.com/OBI (optional description here) (as of Feb. 14, 2012, 07:40). |
| AMA | OBI. Acronym Geek. February 14, 2012, 07:40. Available at: http://www.acronymgeek.com/OBI. Accessed February 14, 2012, 07:40. |