| APA | B.P.. (2012, February 14). In Acronym Geek. Retrieved 19:49, February 14, 2012, from http://www.acronymgeek.com/B.P. |
| MLA | "B.P.." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/B.P.>. |
| MHRA | 'B.P.', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/B.P.> [accessed 14 February 2012] |
| Chicago | "B.P.", http://www.acronymgeek.com/B.P. (accessed February 14, 2012). |
| CBE/CSE | B.P. [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/B.P.. |
| Bluebook | B.P., http://www.acronymgeek.com/B.P. (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, B.P., http://www.acronymgeek.com/B.P. (optional description here) (as of Feb. 14, 2012, 19:49). |
| AMA | B.P.. Acronym Geek. February 14, 2012, 19:49. Available at: http://www.acronymgeek.com/B.P.. Accessed February 14, 2012, 19:49. |