| APA | SFPO. (2012, February 12). In Acronym Geek. Retrieved 00:02, February 12, 2012, from http://www.acronymgeek.com/SFPO |
| MLA | "SFPO." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/SFPO>. |
| MHRA | 'SFPO', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/SFPO> [accessed 12 February 2012] |
| Chicago | "SFPO", http://www.acronymgeek.com/SFPO (accessed February 12, 2012). |
| CBE/CSE | SFPO [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/SFPO. |
| Bluebook | SFPO, http://www.acronymgeek.com/SFPO (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SFPO, http://www.acronymgeek.com/SFPO (optional description here) (as of Feb. 12, 2012, 00:02). |
| AMA | SFPO. Acronym Geek. February 12, 2012, 00:02. Available at: http://www.acronymgeek.com/SFPO. Accessed February 12, 2012, 00:02. |