| APA | BPHO. (2012, February 16). In Acronym Geek. Retrieved 17:26, February 16, 2012, from http://www.acronymgeek.com/BPHO |
| MLA | "BPHO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/BPHO>. |
| MHRA | 'BPHO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/BPHO> [accessed 16 February 2012] |
| Chicago | "BPHO", http://www.acronymgeek.com/BPHO (accessed February 16, 2012). |
| CBE/CSE | BPHO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/BPHO. |
| Bluebook | BPHO, http://www.acronymgeek.com/BPHO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BPHO, http://www.acronymgeek.com/BPHO (optional description here) (as of Feb. 16, 2012, 17:26). |
| AMA | BPHO. Acronym Geek. February 16, 2012, 17:26. Available at: http://www.acronymgeek.com/BPHO. Accessed February 16, 2012, 17:26. |