| APA | PFN. (2012, February 14). In Acronym Geek. Retrieved 04:15, February 14, 2012, from http://www.acronymgeek.com/PFN |
| MLA | "PFN." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PFN>. |
| MHRA | 'PFN', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PFN> [accessed 14 February 2012] |
| Chicago | "PFN", http://www.acronymgeek.com/PFN (accessed February 14, 2012). |
| CBE/CSE | PFN [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PFN. |
| Bluebook | PFN, http://www.acronymgeek.com/PFN (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PFN, http://www.acronymgeek.com/PFN (optional description here) (as of Feb. 14, 2012, 04:15). |
| AMA | PFN. Acronym Geek. February 14, 2012, 04:15. Available at: http://www.acronymgeek.com/PFN. Accessed February 14, 2012, 04:15. |