| APA | PFSK. (2012, February 15). In Acronym Geek. Retrieved 02:32, February 15, 2012, from http://www.acronymgeek.com/PFSK |
| MLA | "PFSK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PFSK>. |
| MHRA | 'PFSK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PFSK> [accessed 15 February 2012] |
| Chicago | "PFSK", http://www.acronymgeek.com/PFSK (accessed February 15, 2012). |
| CBE/CSE | PFSK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PFSK. |
| Bluebook | PFSK, http://www.acronymgeek.com/PFSK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PFSK, http://www.acronymgeek.com/PFSK (optional description here) (as of Feb. 15, 2012, 02:32). |
| AMA | PFSK. Acronym Geek. February 15, 2012, 02:32. Available at: http://www.acronymgeek.com/PFSK. Accessed February 15, 2012, 02:32. |