| APA | HWWO. (2012, February 17). In Acronym Geek. Retrieved 06:59, February 17, 2012, from http://www.acronymgeek.com/HWWO |
| MLA | "HWWO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/HWWO>. |
| MHRA | 'HWWO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/HWWO> [accessed 17 February 2012] |
| Chicago | "HWWO", http://www.acronymgeek.com/HWWO (accessed February 17, 2012). |
| CBE/CSE | HWWO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/HWWO. |
| Bluebook | HWWO, http://www.acronymgeek.com/HWWO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HWWO, http://www.acronymgeek.com/HWWO (optional description here) (as of Feb. 17, 2012, 06:59). |
| AMA | HWWO. Acronym Geek. February 17, 2012, 06:59. Available at: http://www.acronymgeek.com/HWWO. Accessed February 17, 2012, 06:59. |