| APA | HDAL. (2012, February 16). In Acronym Geek. Retrieved 16:15, February 16, 2012, from http://www.acronymgeek.com/HDAL |
| MLA | "HDAL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HDAL>. |
| MHRA | 'HDAL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HDAL> [accessed 16 February 2012] |
| Chicago | "HDAL", http://www.acronymgeek.com/HDAL (accessed February 16, 2012). |
| CBE/CSE | HDAL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HDAL. |
| Bluebook | HDAL, http://www.acronymgeek.com/HDAL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HDAL, http://www.acronymgeek.com/HDAL (optional description here) (as of Feb. 16, 2012, 16:15). |
| AMA | HDAL. Acronym Geek. February 16, 2012, 16:15. Available at: http://www.acronymgeek.com/HDAL. Accessed February 16, 2012, 16:15. |