| APA | PFNK. (2012, February 16). In Acronym Geek. Retrieved 06:26, February 16, 2012, from http://www.acronymgeek.com/PFNK |
| MLA | "PFNK." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PFNK>. |
| MHRA | 'PFNK', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PFNK> [accessed 16 February 2012] |
| Chicago | "PFNK", http://www.acronymgeek.com/PFNK (accessed February 16, 2012). |
| CBE/CSE | PFNK [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PFNK. |
| Bluebook | PFNK, http://www.acronymgeek.com/PFNK (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PFNK, http://www.acronymgeek.com/PFNK (optional description here) (as of Feb. 16, 2012, 06:26). |
| AMA | PFNK. Acronym Geek. February 16, 2012, 06:26. Available at: http://www.acronymgeek.com/PFNK. Accessed February 16, 2012, 06:26. |