| APA | HFDB. (2012, February 15). In Acronym Geek. Retrieved 02:20, February 15, 2012, from http://www.acronymgeek.com/HFDB |
| MLA | "HFDB." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HFDB>. |
| MHRA | 'HFDB', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HFDB> [accessed 15 February 2012] |
| Chicago | "HFDB", http://www.acronymgeek.com/HFDB (accessed February 15, 2012). |
| CBE/CSE | HFDB [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HFDB. |
| Bluebook | HFDB, http://www.acronymgeek.com/HFDB (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HFDB, http://www.acronymgeek.com/HFDB (optional description here) (as of Feb. 15, 2012, 02:20). |
| AMA | HFDB. Acronym Geek. February 15, 2012, 02:20. Available at: http://www.acronymgeek.com/HFDB. Accessed February 15, 2012, 02:20. |