| APA | OBAS. (2012, February 15). In Acronym Geek. Retrieved 07:06, February 15, 2012, from http://www.acronymgeek.com/OBAS |
| MLA | "OBAS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OBAS>. |
| MHRA | 'OBAS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OBAS> [accessed 15 February 2012] |
| Chicago | "OBAS", http://www.acronymgeek.com/OBAS (accessed February 15, 2012). |
| CBE/CSE | OBAS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OBAS. |
| Bluebook | OBAS, http://www.acronymgeek.com/OBAS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OBAS, http://www.acronymgeek.com/OBAS (optional description here) (as of Feb. 15, 2012, 07:06). |
| AMA | OBAS. Acronym Geek. February 15, 2012, 07:06. Available at: http://www.acronymgeek.com/OBAS. Accessed February 15, 2012, 07:06. |