| APA | PSF. (2012, February 14). In Acronym Geek. Retrieved 06:47, February 14, 2012, from http://www.acronymgeek.com/PSF |
| MLA | "PSF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PSF>. |
| MHRA | 'PSF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PSF> [accessed 14 February 2012] |
| Chicago | "PSF", http://www.acronymgeek.com/PSF (accessed February 14, 2012). |
| CBE/CSE | PSF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PSF. |
| Bluebook | PSF, http://www.acronymgeek.com/PSF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PSF, http://www.acronymgeek.com/PSF (optional description here) (as of Feb. 14, 2012, 06:47). |
| AMA | PSF. Acronym Geek. February 14, 2012, 06:47. Available at: http://www.acronymgeek.com/PSF. Accessed February 14, 2012, 06:47. |