| APA | OBEL. (2012, February 17). In Acronym Geek. Retrieved 03:42, February 17, 2012, from http://www.acronymgeek.com/OBEL |
| MLA | "OBEL." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/OBEL>. |
| MHRA | 'OBEL', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/OBEL> [accessed 17 February 2012] |
| Chicago | "OBEL", http://www.acronymgeek.com/OBEL (accessed February 17, 2012). |
| CBE/CSE | OBEL [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/OBEL. |
| Bluebook | OBEL, http://www.acronymgeek.com/OBEL (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OBEL, http://www.acronymgeek.com/OBEL (optional description here) (as of Feb. 17, 2012, 03:42). |
| AMA | OBEL. Acronym Geek. February 17, 2012, 03:42. Available at: http://www.acronymgeek.com/OBEL. Accessed February 17, 2012, 03:42. |