| APA | HSWO. (2012, February 15). In Acronym Geek. Retrieved 19:15, February 15, 2012, from http://www.acronymgeek.com/HSWO |
| MLA | "HSWO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HSWO>. |
| MHRA | 'HSWO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HSWO> [accessed 15 February 2012] |
| Chicago | "HSWO", http://www.acronymgeek.com/HSWO (accessed February 15, 2012). |
| CBE/CSE | HSWO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HSWO. |
| Bluebook | HSWO, http://www.acronymgeek.com/HSWO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HSWO, http://www.acronymgeek.com/HSWO (optional description here) (as of Feb. 15, 2012, 19:15). |
| AMA | HSWO. Acronym Geek. February 15, 2012, 19:15. Available at: http://www.acronymgeek.com/HSWO. Accessed February 15, 2012, 19:15. |