| APA | NPF. (2012, February 15). In Acronym Geek. Retrieved 03:38, February 15, 2012, from http://www.acronymgeek.com/NPF |
| MLA | "NPF." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/NPF>. |
| MHRA | 'NPF', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/NPF> [accessed 15 February 2012] |
| Chicago | "NPF", http://www.acronymgeek.com/NPF (accessed February 15, 2012). |
| CBE/CSE | NPF [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/NPF. |
| Bluebook | NPF, http://www.acronymgeek.com/NPF (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NPF, http://www.acronymgeek.com/NPF (optional description here) (as of Feb. 15, 2012, 03:38). |
| AMA | NPF. Acronym Geek. February 15, 2012, 03:38. Available at: http://www.acronymgeek.com/NPF. Accessed February 15, 2012, 03:38. |