| APA | HSD. (2012, February 13). In Acronym Geek. Retrieved 21:22, February 13, 2012, from http://www.acronymgeek.com/HSD |
| MLA | "HSD." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HSD>. |
| MHRA | 'HSD', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HSD> [accessed 13 February 2012] |
| Chicago | "HSD", http://www.acronymgeek.com/HSD (accessed February 13, 2012). |
| CBE/CSE | HSD [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HSD. |
| Bluebook | HSD, http://www.acronymgeek.com/HSD (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HSD, http://www.acronymgeek.com/HSD (optional description here) (as of Feb. 13, 2012, 21:22). |
| AMA | HSD. Acronym Geek. February 13, 2012, 21:22. Available at: http://www.acronymgeek.com/HSD. Accessed February 13, 2012, 21:22. |