| APA | FHDO. (2012, February 16). In Acronym Geek. Retrieved 10:47, February 16, 2012, from http://www.acronymgeek.com/FHDO |
| MLA | "FHDO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/FHDO>. |
| MHRA | 'FHDO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/FHDO> [accessed 16 February 2012] |
| Chicago | "FHDO", http://www.acronymgeek.com/FHDO (accessed February 16, 2012). |
| CBE/CSE | FHDO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/FHDO. |
| Bluebook | FHDO, http://www.acronymgeek.com/FHDO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FHDO, http://www.acronymgeek.com/FHDO (optional description here) (as of Feb. 16, 2012, 10:47). |
| AMA | FHDO. Acronym Geek. February 16, 2012, 10:47. Available at: http://www.acronymgeek.com/FHDO. Accessed February 16, 2012, 10:47. |