| APA | NNPH. (2012, February 15). In Acronym Geek. Retrieved 10:43, February 15, 2012, from http://www.acronymgeek.com/NNPH |
| MLA | "NNPH." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/NNPH>. |
| MHRA | 'NNPH', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/NNPH> [accessed 15 February 2012] |
| Chicago | "NNPH", http://www.acronymgeek.com/NNPH (accessed February 15, 2012). |
| CBE/CSE | NNPH [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/NNPH. |
| Bluebook | NNPH, http://www.acronymgeek.com/NNPH (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NNPH, http://www.acronymgeek.com/NNPH (optional description here) (as of Feb. 15, 2012, 10:43). |
| AMA | NNPH. Acronym Geek. February 15, 2012, 10:43. Available at: http://www.acronymgeek.com/NNPH. Accessed February 15, 2012, 10:43. |