| APA | OBP. (2012, February 10). In Acronym Geek. Retrieved 16:50, February 10, 2012, from http://www.acronymgeek.com/OBP |
| MLA | "OBP." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/OBP>. |
| MHRA | 'OBP', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/OBP> [accessed 10 February 2012] |
| Chicago | "OBP", http://www.acronymgeek.com/OBP (accessed February 10, 2012). |
| CBE/CSE | OBP [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/OBP. |
| Bluebook | OBP, http://www.acronymgeek.com/OBP (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OBP, http://www.acronymgeek.com/OBP (optional description here) (as of Feb. 10, 2012, 16:50). |
| AMA | OBP. Acronym Geek. February 10, 2012, 16:50. Available at: http://www.acronymgeek.com/OBP. Accessed February 10, 2012, 16:50. |