| APA | HLDC. (2012, February 15). In Acronym Geek. Retrieved 11:12, February 15, 2012, from http://www.acronymgeek.com/HLDC |
| MLA | "HLDC." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HLDC>. |
| MHRA | 'HLDC', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HLDC> [accessed 15 February 2012] |
| Chicago | "HLDC", http://www.acronymgeek.com/HLDC (accessed February 15, 2012). |
| CBE/CSE | HLDC [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HLDC. |
| Bluebook | HLDC, http://www.acronymgeek.com/HLDC (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLDC, http://www.acronymgeek.com/HLDC (optional description here) (as of Feb. 15, 2012, 11:12). |
| AMA | HLDC. Acronym Geek. February 15, 2012, 11:12. Available at: http://www.acronymgeek.com/HLDC. Accessed February 15, 2012, 11:12. |