| APA | OBEF. (2012, February 14). In Acronym Geek. Retrieved 13:22, February 14, 2012, from http://www.acronymgeek.com/OBEF |
| MLA | "OBEF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OBEF>. |
| MHRA | 'OBEF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OBEF> [accessed 14 February 2012] |
| Chicago | "OBEF", http://www.acronymgeek.com/OBEF (accessed February 14, 2012). |
| CBE/CSE | OBEF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OBEF. |
| Bluebook | OBEF, http://www.acronymgeek.com/OBEF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OBEF, http://www.acronymgeek.com/OBEF (optional description here) (as of Feb. 14, 2012, 13:22). |
| AMA | OBEF. Acronym Geek. February 14, 2012, 13:22. Available at: http://www.acronymgeek.com/OBEF. Accessed February 14, 2012, 13:22. |