| APA | SDH. (2012, February 10). In Acronym Geek. Retrieved 11:12, February 10, 2012, from http://www.acronymgeek.com/SDH |
| MLA | "SDH." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/SDH>. |
| MHRA | 'SDH', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/SDH> [accessed 10 February 2012] |
| Chicago | "SDH", http://www.acronymgeek.com/SDH (accessed February 10, 2012). |
| CBE/CSE | SDH [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/SDH. |
| Bluebook | SDH, http://www.acronymgeek.com/SDH (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDH, http://www.acronymgeek.com/SDH (optional description here) (as of Feb. 10, 2012, 11:12). |
| AMA | SDH. Acronym Geek. February 10, 2012, 11:12. Available at: http://www.acronymgeek.com/SDH. Accessed February 10, 2012, 11:12. |