| APA | PSFN. (2012, February 16). In Acronym Geek. Retrieved 02:24, February 16, 2012, from http://www.acronymgeek.com/PSFN |
| MLA | "PSFN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PSFN>. |
| MHRA | 'PSFN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PSFN> [accessed 16 February 2012] |
| Chicago | "PSFN", http://www.acronymgeek.com/PSFN (accessed February 16, 2012). |
| CBE/CSE | PSFN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PSFN. |
| Bluebook | PSFN, http://www.acronymgeek.com/PSFN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PSFN, http://www.acronymgeek.com/PSFN (optional description here) (as of Feb. 16, 2012, 02:24). |
| AMA | PSFN. Acronym Geek. February 16, 2012, 02:24. Available at: http://www.acronymgeek.com/PSFN. Accessed February 16, 2012, 02:24. |