| APA | OBGL. (2012, February 15). In Acronym Geek. Retrieved 01:06, February 15, 2012, from http://www.acronymgeek.com/OBGL |
| MLA | "OBGL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OBGL>. |
| MHRA | 'OBGL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OBGL> [accessed 15 February 2012] |
| Chicago | "OBGL", http://www.acronymgeek.com/OBGL (accessed February 15, 2012). |
| CBE/CSE | OBGL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OBGL. |
| Bluebook | OBGL, http://www.acronymgeek.com/OBGL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OBGL, http://www.acronymgeek.com/OBGL (optional description here) (as of Feb. 15, 2012, 01:06). |
| AMA | OBGL. Acronym Geek. February 15, 2012, 01:06. Available at: http://www.acronymgeek.com/OBGL. Accessed February 15, 2012, 01:06. |