| Style | Reference Text |
|---|
| APA | NPN. (2012, May 27). In All Acronyms. Retrieved 04:05, May 27, 2012, from http://www.all-acronyms.com/NPN |
| MLA | "NPN." All Acronyms. 27 May 2012, 04:05. All Acronyms. 27 May 2012 <http://www.all-acronyms.com/NPN>. |
| MHRA | 'NPN', All Acronyms, 27 May 2012, 04:05, <http://www.all-acronyms.com/NPN> [accessed 27 May 2012] |
| Chicago | "NPN," http://www.all-acronyms.com/NPN (accessed May 27, 2012). |
| CBE/CSE | NPN [Internet]. All Acronyms; 2012 May 27, 04:05 [cited 2012 May 27]. Available from: http://www.all-acronyms.com/NPN. |
| Bluebook | NPN, http://www.all-acronyms.com/NPN (last visited May 27, 2012). |
| Bluebook: Harvard JOLT | See All Acronyms, NPN, http://www.all-acronyms.com/NPN (optional description here) (as of May. 27, 2012, 04:05). |
| AMA | NPN. All Acronyms. May 27, 2012, 04:05. Available at: http://www.all-acronyms.com/NPN. Accessed May 27, 2012. |
NASA Part Number