| APA | HFD. (2012, February 13). In Acronym Geek. Retrieved 21:27, February 13, 2012, from http://www.acronymgeek.com/HFD |
| MLA | "HFD." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HFD>. |
| MHRA | 'HFD', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HFD> [accessed 13 February 2012] |
| Chicago | "HFD", http://www.acronymgeek.com/HFD (accessed February 13, 2012). |
| CBE/CSE | HFD [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HFD. |
| Bluebook | HFD, http://www.acronymgeek.com/HFD (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HFD, http://www.acronymgeek.com/HFD (optional description here) (as of Feb. 13, 2012, 21:27). |
| AMA | HFD. Acronym Geek. February 13, 2012, 21:27. Available at: http://www.acronymgeek.com/HFD. Accessed February 13, 2012, 21:27. |