| APA | IFSO. (2012, February 15). In Acronym Geek. Retrieved 05:04, February 15, 2012, from http://www.acronymgeek.com/IFSO |
| MLA | "IFSO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/IFSO>. |
| MHRA | 'IFSO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/IFSO> [accessed 15 February 2012] |
| Chicago | "IFSO", http://www.acronymgeek.com/IFSO (accessed February 15, 2012). |
| CBE/CSE | IFSO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/IFSO. |
| Bluebook | IFSO, http://www.acronymgeek.com/IFSO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IFSO, http://www.acronymgeek.com/IFSO (optional description here) (as of Feb. 15, 2012, 05:04). |
| AMA | IFSO. Acronym Geek. February 15, 2012, 05:04. Available at: http://www.acronymgeek.com/IFSO. Accessed February 15, 2012, 05:04. |