| APA | HLDM. (2012, February 14). In Acronym Geek. Retrieved 13:54, February 14, 2012, from http://www.acronymgeek.com/HLDM |
| MLA | "HLDM." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HLDM>. |
| MHRA | 'HLDM', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HLDM> [accessed 14 February 2012] |
| Chicago | "HLDM", http://www.acronymgeek.com/HLDM (accessed February 14, 2012). |
| CBE/CSE | HLDM [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HLDM. |
| Bluebook | HLDM, http://www.acronymgeek.com/HLDM (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLDM, http://www.acronymgeek.com/HLDM (optional description here) (as of Feb. 14, 2012, 13:54). |
| AMA | HLDM. Acronym Geek. February 14, 2012, 13:54. Available at: http://www.acronymgeek.com/HLDM. Accessed February 14, 2012, 13:54. |