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