| APA | OBBO. (2012, February 15). In Acronym Geek. Retrieved 22:09, February 15, 2012, from http://www.acronymgeek.com/OBBO |
| MLA | "OBBO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OBBO>. |
| MHRA | 'OBBO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OBBO> [accessed 15 February 2012] |
| Chicago | "OBBO", http://www.acronymgeek.com/OBBO (accessed February 15, 2012). |
| CBE/CSE | OBBO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OBBO. |
| Bluebook | OBBO, http://www.acronymgeek.com/OBBO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OBBO, http://www.acronymgeek.com/OBBO (optional description here) (as of Feb. 15, 2012, 22:09). |
| AMA | OBBO. Acronym Geek. February 15, 2012, 22:09. Available at: http://www.acronymgeek.com/OBBO. Accessed February 15, 2012, 22:09. |