| APA | NPFL. (2012, February 14). In Acronym Geek. Retrieved 00:49, February 14, 2012, from http://www.acronymgeek.com/NPFL |
| MLA | "NPFL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/NPFL>. |
| MHRA | 'NPFL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/NPFL> [accessed 14 February 2012] |
| Chicago | "NPFL", http://www.acronymgeek.com/NPFL (accessed February 14, 2012). |
| CBE/CSE | NPFL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/NPFL. |
| Bluebook | NPFL, http://www.acronymgeek.com/NPFL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NPFL, http://www.acronymgeek.com/NPFL (optional description here) (as of Feb. 14, 2012, 00:49). |
| AMA | NPFL. Acronym Geek. February 14, 2012, 00:49. Available at: http://www.acronymgeek.com/NPFL. Accessed February 14, 2012, 00:49. |