| APA | PNBR. (2012, February 15). In Acronym Geek. Retrieved 00:51, February 15, 2012, from http://www.acronymgeek.com/PNBR |
| MLA | "PNBR." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PNBR>. |
| MHRA | 'PNBR', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PNBR> [accessed 15 February 2012] |
| Chicago | "PNBR", http://www.acronymgeek.com/PNBR (accessed February 15, 2012). |
| CBE/CSE | PNBR [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PNBR. |
| Bluebook | PNBR, http://www.acronymgeek.com/PNBR (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNBR, http://www.acronymgeek.com/PNBR (optional description here) (as of Feb. 15, 2012, 00:51). |
| AMA | PNBR. Acronym Geek. February 15, 2012, 00:51. Available at: http://www.acronymgeek.com/PNBR. Accessed February 15, 2012, 00:51. |