| APA | PNBP. (2012, February 17). In Acronym Geek. Retrieved 00:01, February 17, 2012, from http://www.acronymgeek.com/PNBP |
| MLA | "PNBP." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/PNBP>. |
| MHRA | 'PNBP', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/PNBP> [accessed 17 February 2012] |
| Chicago | "PNBP", http://www.acronymgeek.com/PNBP (accessed February 17, 2012). |
| CBE/CSE | PNBP [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/PNBP. |
| Bluebook | PNBP, http://www.acronymgeek.com/PNBP (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNBP, http://www.acronymgeek.com/PNBP (optional description here) (as of Feb. 17, 2012, 00:01). |
| AMA | PNBP. Acronym Geek. February 17, 2012, 00:01. Available at: http://www.acronymgeek.com/PNBP. Accessed February 17, 2012, 00:01. |