| APA | HFDP. (2012, February 16). In Acronym Geek. Retrieved 23:59, February 16, 2012, from http://www.acronymgeek.com/HFDP |
| MLA | "HFDP." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HFDP>. |
| MHRA | 'HFDP', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HFDP> [accessed 16 February 2012] |
| Chicago | "HFDP", http://www.acronymgeek.com/HFDP (accessed February 16, 2012). |
| CBE/CSE | HFDP [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HFDP. |
| Bluebook | HFDP, http://www.acronymgeek.com/HFDP (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HFDP, http://www.acronymgeek.com/HFDP (optional description here) (as of Feb. 16, 2012, 23:59). |
| AMA | HFDP. Acronym Geek. February 16, 2012, 23:59. Available at: http://www.acronymgeek.com/HFDP. Accessed February 16, 2012, 23:59. |