| APA | HHZD. (2012, February 15). In Acronym Geek. Retrieved 13:14, February 15, 2012, from http://www.acronymgeek.com/HHZD |
| MLA | "HHZD." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HHZD>. |
| MHRA | 'HHZD', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HHZD> [accessed 15 February 2012] |
| Chicago | "HHZD", http://www.acronymgeek.com/HHZD (accessed February 15, 2012). |
| CBE/CSE | HHZD [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HHZD. |
| Bluebook | HHZD, http://www.acronymgeek.com/HHZD (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HHZD, http://www.acronymgeek.com/HHZD (optional description here) (as of Feb. 15, 2012, 13:14). |
| AMA | HHZD. Acronym Geek. February 15, 2012, 13:14. Available at: http://www.acronymgeek.com/HHZD. Accessed February 15, 2012, 13:14. |