| APA | PFI. (2012, February 9). In Acronym Geek. Retrieved 20:35, February 9, 2012, from http://www.acronymgeek.com/PFI |
| MLA | "PFI." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/PFI>. |
| MHRA | 'PFI', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/PFI> [accessed 9 February 2012] |
| Chicago | "PFI", http://www.acronymgeek.com/PFI (accessed February 9, 2012). |
| CBE/CSE | PFI [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/PFI. |
| Bluebook | PFI, http://www.acronymgeek.com/PFI (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PFI, http://www.acronymgeek.com/PFI (optional description here) (as of Feb. 9, 2012, 20:35). |
| AMA | PFI. Acronym Geek. February 9, 2012, 20:35. Available at: http://www.acronymgeek.com/PFI. Accessed February 9, 2012, 20:35. |