| APA | FHSO. (2012, February 16). In Acronym Geek. Retrieved 20:23, February 16, 2012, from http://www.acronymgeek.com/FHSO |
| MLA | "FHSO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/FHSO>. |
| MHRA | 'FHSO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/FHSO> [accessed 16 February 2012] |
| Chicago | "FHSO", http://www.acronymgeek.com/FHSO (accessed February 16, 2012). |
| CBE/CSE | FHSO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/FHSO. |
| Bluebook | FHSO, http://www.acronymgeek.com/FHSO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FHSO, http://www.acronymgeek.com/FHSO (optional description here) (as of Feb. 16, 2012, 20:23). |
| AMA | FHSO. Acronym Geek. February 16, 2012, 20:23. Available at: http://www.acronymgeek.com/FHSO. Accessed February 16, 2012, 20:23. |