| APA | HFDL. (2012, February 14). In Acronym Geek. Retrieved 08:26, February 14, 2012, from http://www.acronymgeek.com/HFDL |
| MLA | "HFDL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HFDL>. |
| MHRA | 'HFDL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HFDL> [accessed 14 February 2012] |
| Chicago | "HFDL", http://www.acronymgeek.com/HFDL (accessed February 14, 2012). |
| CBE/CSE | HFDL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HFDL. |
| Bluebook | HFDL, http://www.acronymgeek.com/HFDL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HFDL, http://www.acronymgeek.com/HFDL (optional description here) (as of Feb. 14, 2012, 08:26). |
| AMA | HFDL. Acronym Geek. February 14, 2012, 08:26. Available at: http://www.acronymgeek.com/HFDL. Accessed February 14, 2012, 08:26. |