| APA | HW. (2012, February 9). In Acronym Geek. Retrieved 15:42, February 9, 2012, from http://www.acronymgeek.com/HW |
| MLA | "HW." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/HW>. |
| MHRA | 'HW', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/HW> [accessed 9 February 2012] |
| Chicago | "HW", http://www.acronymgeek.com/HW (accessed February 9, 2012). |
| CBE/CSE | HW [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/HW. |
| Bluebook | HW, http://www.acronymgeek.com/HW (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HW, http://www.acronymgeek.com/HW (optional description here) (as of Feb. 9, 2012, 15:42). |
| AMA | HW. Acronym Geek. February 9, 2012, 15:42. Available at: http://www.acronymgeek.com/HW. Accessed February 9, 2012, 15:42. |