| APA | HDC. (2012, February 14). In Acronym Geek. Retrieved 09:57, February 14, 2012, from http://www.acronymgeek.com/HDC |
| MLA | "HDC." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HDC>. |
| MHRA | 'HDC', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HDC> [accessed 14 February 2012] |
| Chicago | "HDC", http://www.acronymgeek.com/HDC (accessed February 14, 2012). |
| CBE/CSE | HDC [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HDC. |
| Bluebook | HDC, http://www.acronymgeek.com/HDC (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HDC, http://www.acronymgeek.com/HDC (optional description here) (as of Feb. 14, 2012, 09:57). |
| AMA | HDC. Acronym Geek. February 14, 2012, 09:57. Available at: http://www.acronymgeek.com/HDC. Accessed February 14, 2012, 09:57. |