| APA | PNBE. (2012, February 14). In Acronym Geek. Retrieved 17:56, February 14, 2012, from http://www.acronymgeek.com/PNBE |
| MLA | "PNBE." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PNBE>. |
| MHRA | 'PNBE', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PNBE> [accessed 14 February 2012] |
| Chicago | "PNBE", http://www.acronymgeek.com/PNBE (accessed February 14, 2012). |
| CBE/CSE | PNBE [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PNBE. |
| Bluebook | PNBE, http://www.acronymgeek.com/PNBE (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNBE, http://www.acronymgeek.com/PNBE (optional description here) (as of Feb. 14, 2012, 17:56). |
| AMA | PNBE. Acronym Geek. February 14, 2012, 17:56. Available at: http://www.acronymgeek.com/PNBE. Accessed February 14, 2012, 17:56. |