| APA | PNB. (2012, February 9). In Acronym Geek. Retrieved 10:15, February 9, 2012, from http://www.acronymgeek.com/PNB |
| MLA | "PNB." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/PNB>. |
| MHRA | 'PNB', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/PNB> [accessed 9 February 2012] |
| Chicago | "PNB", http://www.acronymgeek.com/PNB (accessed February 9, 2012). |
| CBE/CSE | PNB [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/PNB. |
| Bluebook | PNB, http://www.acronymgeek.com/PNB (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNB, http://www.acronymgeek.com/PNB (optional description here) (as of Feb. 9, 2012, 10:15). |
| AMA | PNB. Acronym Geek. February 9, 2012, 10:15. Available at: http://www.acronymgeek.com/PNB. Accessed February 9, 2012, 10:15. |