| APA | HFDR. (2012, February 15). In Acronym Geek. Retrieved 01:23, February 15, 2012, from http://www.acronymgeek.com/HFDR |
| MLA | "HFDR." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HFDR>. |
| MHRA | 'HFDR', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HFDR> [accessed 15 February 2012] |
| Chicago | "HFDR", http://www.acronymgeek.com/HFDR (accessed February 15, 2012). |
| CBE/CSE | HFDR [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HFDR. |
| Bluebook | HFDR, http://www.acronymgeek.com/HFDR (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HFDR, http://www.acronymgeek.com/HFDR (optional description here) (as of Feb. 15, 2012, 01:23). |
| AMA | HFDR. Acronym Geek. February 15, 2012, 01:23. Available at: http://www.acronymgeek.com/HFDR. Accessed February 15, 2012, 01:23. |