| APA | P-NNI. (2012, February 12). In Acronym Geek. Retrieved 16:35, February 12, 2012, from http://www.acronymgeek.com/P-NNI |
| MLA | "P-NNI." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/P-NNI>. |
| MHRA | 'P-NNI', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/P-NNI> [accessed 12 February 2012] |
| Chicago | "P-NNI", http://www.acronymgeek.com/P-NNI (accessed February 12, 2012). |
| CBE/CSE | P-NNI [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/P-NNI. |
| Bluebook | P-NNI, http://www.acronymgeek.com/P-NNI (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, P-NNI, http://www.acronymgeek.com/P-NNI (optional description here) (as of Feb. 12, 2012, 16:35). |
| AMA | P-NNI. Acronym Geek. February 12, 2012, 16:35. Available at: http://www.acronymgeek.com/P-NNI. Accessed February 12, 2012, 16:35. |