| APA | HVDY. (2012, February 15). In Acronym Geek. Retrieved 12:07, February 15, 2012, from http://www.acronymgeek.com/HVDY |
| MLA | "HVDY." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HVDY>. |
| MHRA | 'HVDY', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HVDY> [accessed 15 February 2012] |
| Chicago | "HVDY", http://www.acronymgeek.com/HVDY (accessed February 15, 2012). |
| CBE/CSE | HVDY [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HVDY. |
| Bluebook | HVDY, http://www.acronymgeek.com/HVDY (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HVDY, http://www.acronymgeek.com/HVDY (optional description here) (as of Feb. 15, 2012, 12:07). |
| AMA | HVDY. Acronym Geek. February 15, 2012, 12:07. Available at: http://www.acronymgeek.com/HVDY. Accessed February 15, 2012, 12:07. |