| APA | PNDF. (2012, February 17). In Acronym Geek. Retrieved 05:52, February 17, 2012, from http://www.acronymgeek.com/PNDF |
| MLA | "PNDF." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/PNDF>. |
| MHRA | 'PNDF', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/PNDF> [accessed 17 February 2012] |
| Chicago | "PNDF", http://www.acronymgeek.com/PNDF (accessed February 17, 2012). |
| CBE/CSE | PNDF [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/PNDF. |
| Bluebook | PNDF, http://www.acronymgeek.com/PNDF (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNDF, http://www.acronymgeek.com/PNDF (optional description here) (as of Feb. 17, 2012, 05:52). |
| AMA | PNDF. Acronym Geek. February 17, 2012, 05:52. Available at: http://www.acronymgeek.com/PNDF. Accessed February 17, 2012, 05:52. |