| APA | NNPG. (2012, February 16). In Acronym Geek. Retrieved 06:28, February 16, 2012, from http://www.acronymgeek.com/NNPG |
| MLA | "NNPG." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NNPG>. |
| MHRA | 'NNPG', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NNPG> [accessed 16 February 2012] |
| Chicago | "NNPG", http://www.acronymgeek.com/NNPG (accessed February 16, 2012). |
| CBE/CSE | NNPG [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NNPG. |
| Bluebook | NNPG, http://www.acronymgeek.com/NNPG (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NNPG, http://www.acronymgeek.com/NNPG (optional description here) (as of Feb. 16, 2012, 06:28). |
| AMA | NNPG. Acronym Geek. February 16, 2012, 06:28. Available at: http://www.acronymgeek.com/NNPG. Accessed February 16, 2012, 06:28. |