| APA | PBKU. (2012, February 14). In Acronym Geek. Retrieved 15:07, February 14, 2012, from http://www.acronymgeek.com/PBKU |
| MLA | "PBKU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PBKU>. |
| MHRA | 'PBKU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PBKU> [accessed 14 February 2012] |
| Chicago | "PBKU", http://www.acronymgeek.com/PBKU (accessed February 14, 2012). |
| CBE/CSE | PBKU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PBKU. |
| Bluebook | PBKU, http://www.acronymgeek.com/PBKU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PBKU, http://www.acronymgeek.com/PBKU (optional description here) (as of Feb. 14, 2012, 15:07). |
| AMA | PBKU. Acronym Geek. February 14, 2012, 15:07. Available at: http://www.acronymgeek.com/PBKU. Accessed February 14, 2012, 15:07. |