| APA | HFDX. (2012, February 16). In Acronym Geek. Retrieved 20:52, February 16, 2012, from http://www.acronymgeek.com/HFDX |
| MLA | "HFDX." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HFDX>. |
| MHRA | 'HFDX', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HFDX> [accessed 16 February 2012] |
| Chicago | "HFDX", http://www.acronymgeek.com/HFDX (accessed February 16, 2012). |
| CBE/CSE | HFDX [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HFDX. |
| Bluebook | HFDX, http://www.acronymgeek.com/HFDX (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HFDX, http://www.acronymgeek.com/HFDX (optional description here) (as of Feb. 16, 2012, 20:52). |
| AMA | HFDX. Acronym Geek. February 16, 2012, 20:52. Available at: http://www.acronymgeek.com/HFDX. Accessed February 16, 2012, 20:52. |