| APA | WSYS. (2012, February 14). In Acronym Geek. Retrieved 17:24, February 14, 2012, from http://www.acronymgeek.com/WSYS |
| MLA | "WSYS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/WSYS>. |
| MHRA | 'WSYS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/WSYS> [accessed 14 February 2012] |
| Chicago | "WSYS", http://www.acronymgeek.com/WSYS (accessed February 14, 2012). |
| CBE/CSE | WSYS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/WSYS. |
| Bluebook | WSYS, http://www.acronymgeek.com/WSYS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, WSYS, http://www.acronymgeek.com/WSYS (optional description here) (as of Feb. 14, 2012, 17:24). |
| AMA | WSYS. Acronym Geek. February 14, 2012, 17:24. Available at: http://www.acronymgeek.com/WSYS. Accessed February 14, 2012, 17:24. |