| APA | POSF. (2012, February 17). In Acronym Geek. Retrieved 02:12, February 17, 2012, from http://www.acronymgeek.com/POSF |
| MLA | "POSF." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/POSF>. |
| MHRA | 'POSF', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/POSF> [accessed 17 February 2012] |
| Chicago | "POSF", http://www.acronymgeek.com/POSF (accessed February 17, 2012). |
| CBE/CSE | POSF [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/POSF. |
| Bluebook | POSF, http://www.acronymgeek.com/POSF (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, POSF, http://www.acronymgeek.com/POSF (optional description here) (as of Feb. 17, 2012, 02:12). |
| AMA | POSF. Acronym Geek. February 17, 2012, 02:12. Available at: http://www.acronymgeek.com/POSF. Accessed February 17, 2012, 02:12. |