| APA | NOPB. (2012, February 11). In Acronym Geek. Retrieved 21:23, February 11, 2012, from http://www.acronymgeek.com/NOPB |
| MLA | "NOPB." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/NOPB>. |
| MHRA | 'NOPB', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/NOPB> [accessed 11 February 2012] |
| Chicago | "NOPB", http://www.acronymgeek.com/NOPB (accessed February 11, 2012). |
| CBE/CSE | NOPB [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/NOPB. |
| Bluebook | NOPB, http://www.acronymgeek.com/NOPB (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NOPB, http://www.acronymgeek.com/NOPB (optional description here) (as of Feb. 11, 2012, 21:23). |
| AMA | NOPB. Acronym Geek. February 11, 2012, 21:23. Available at: http://www.acronymgeek.com/NOPB. Accessed February 11, 2012, 21:23. |