| APA | PHBD. (2012, February 15). In Acronym Geek. Retrieved 05:35, February 15, 2012, from http://www.acronymgeek.com/PHBD |
| MLA | "PHBD." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PHBD>. |
| MHRA | 'PHBD', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PHBD> [accessed 15 February 2012] |
| Chicago | "PHBD", http://www.acronymgeek.com/PHBD (accessed February 15, 2012). |
| CBE/CSE | PHBD [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PHBD. |
| Bluebook | PHBD, http://www.acronymgeek.com/PHBD (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PHBD, http://www.acronymgeek.com/PHBD (optional description here) (as of Feb. 15, 2012, 05:35). |
| AMA | PHBD. Acronym Geek. February 15, 2012, 05:35. Available at: http://www.acronymgeek.com/PHBD. Accessed February 15, 2012, 05:35. |