| APA | PBPU. (2012, February 14). In Acronym Geek. Retrieved 14:30, February 14, 2012, from http://www.acronymgeek.com/PBPU |
| MLA | "PBPU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PBPU>. |
| MHRA | 'PBPU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PBPU> [accessed 14 February 2012] |
| Chicago | "PBPU", http://www.acronymgeek.com/PBPU (accessed February 14, 2012). |
| CBE/CSE | PBPU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PBPU. |
| Bluebook | PBPU, http://www.acronymgeek.com/PBPU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PBPU, http://www.acronymgeek.com/PBPU (optional description here) (as of Feb. 14, 2012, 14:30). |
| AMA | PBPU. Acronym Geek. February 14, 2012, 14:30. Available at: http://www.acronymgeek.com/PBPU. Accessed February 14, 2012, 14:30. |