| APA | NPNP. (2012, February 10). In Acronym Geek. Retrieved 08:06, February 10, 2012, from http://www.acronymgeek.com/NPNP |
| MLA | "NPNP." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/NPNP>. |
| MHRA | 'NPNP', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/NPNP> [accessed 10 February 2012] |
| Chicago | "NPNP", http://www.acronymgeek.com/NPNP (accessed February 10, 2012). |
| CBE/CSE | NPNP [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/NPNP. |
| Bluebook | NPNP, http://www.acronymgeek.com/NPNP (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NPNP, http://www.acronymgeek.com/NPNP (optional description here) (as of Feb. 10, 2012, 08:06). |
| AMA | NPNP. Acronym Geek. February 10, 2012, 08:06. Available at: http://www.acronymgeek.com/NPNP. Accessed February 10, 2012, 08:06. |