| APA | HZWO. (2012, February 14). In Acronym Geek. Retrieved 18:24, February 14, 2012, from http://www.acronymgeek.com/HZWO |
| MLA | "HZWO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HZWO>. |
| MHRA | 'HZWO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HZWO> [accessed 14 February 2012] |
| Chicago | "HZWO", http://www.acronymgeek.com/HZWO (accessed February 14, 2012). |
| CBE/CSE | HZWO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HZWO. |
| Bluebook | HZWO, http://www.acronymgeek.com/HZWO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HZWO, http://www.acronymgeek.com/HZWO (optional description here) (as of Feb. 14, 2012, 18:24). |
| AMA | HZWO. Acronym Geek. February 14, 2012, 18:24. Available at: http://www.acronymgeek.com/HZWO. Accessed February 14, 2012, 18:24. |