| APA | OBBL. (2012, February 17). In Acronym Geek. Retrieved 03:33, February 17, 2012, from http://www.acronymgeek.com/OBBL |
| MLA | "OBBL." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/OBBL>. |
| MHRA | 'OBBL', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/OBBL> [accessed 17 February 2012] |
| Chicago | "OBBL", http://www.acronymgeek.com/OBBL (accessed February 17, 2012). |
| CBE/CSE | OBBL [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/OBBL. |
| Bluebook | OBBL, http://www.acronymgeek.com/OBBL (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OBBL, http://www.acronymgeek.com/OBBL (optional description here) (as of Feb. 17, 2012, 03:33). |
| AMA | OBBL. Acronym Geek. February 17, 2012, 03:33. Available at: http://www.acronymgeek.com/OBBL. Accessed February 17, 2012, 03:33. |