| APA | HDSF. (2012, February 16). In Acronym Geek. Retrieved 23:43, February 16, 2012, from http://www.acronymgeek.com/HDSF |
| MLA | "HDSF." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HDSF>. |
| MHRA | 'HDSF', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HDSF> [accessed 16 February 2012] |
| Chicago | "HDSF", http://www.acronymgeek.com/HDSF (accessed February 16, 2012). |
| CBE/CSE | HDSF [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HDSF. |
| Bluebook | HDSF, http://www.acronymgeek.com/HDSF (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HDSF, http://www.acronymgeek.com/HDSF (optional description here) (as of Feb. 16, 2012, 23:43). |
| AMA | HDSF. Acronym Geek. February 16, 2012, 23:43. Available at: http://www.acronymgeek.com/HDSF. Accessed February 16, 2012, 23:43. |