| APA | PNBK. (2012, February 16). In Acronym Geek. Retrieved 02:19, February 16, 2012, from http://www.acronymgeek.com/PNBK |
| MLA | "PNBK." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PNBK>. |
| MHRA | 'PNBK', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PNBK> [accessed 16 February 2012] |
| Chicago | "PNBK", http://www.acronymgeek.com/PNBK (accessed February 16, 2012). |
| CBE/CSE | PNBK [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PNBK. |
| Bluebook | PNBK, http://www.acronymgeek.com/PNBK (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNBK, http://www.acronymgeek.com/PNBK (optional description here) (as of Feb. 16, 2012, 02:19). |
| AMA | PNBK. Acronym Geek. February 16, 2012, 02:19. Available at: http://www.acronymgeek.com/PNBK. Accessed February 16, 2012, 02:19. |