| APA | HSDF. (2012, February 15). In Acronym Geek. Retrieved 06:34, February 15, 2012, from http://www.acronymgeek.com/HSDF |
| MLA | "HSDF." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HSDF>. |
| MHRA | 'HSDF', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HSDF> [accessed 15 February 2012] |
| Chicago | "HSDF", http://www.acronymgeek.com/HSDF (accessed February 15, 2012). |
| CBE/CSE | HSDF [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HSDF. |
| Bluebook | HSDF, http://www.acronymgeek.com/HSDF (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HSDF, http://www.acronymgeek.com/HSDF (optional description here) (as of Feb. 15, 2012, 06:34). |
| AMA | HSDF. Acronym Geek. February 15, 2012, 06:34. Available at: http://www.acronymgeek.com/HSDF. Accessed February 15, 2012, 06:34. |