| General info : | | Werner Söderström Osakeyhtiö (often shortened to WSOY) is a Finnish book publishing company that was founded in 1878. As of 2011, the company is owned by Bonnier. | |
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| Source : | | Wikipedia (fi.wikipedia.org/wiki/WSOY) | |
| Websites | | Twitter (twitter.com/wsoykirjat) | |
| Websites | | Facebook (www.facebook.com/WSOYkirjat) | |
| Source : | | (www.finder.fi/Kustantamo/Werner+S%C3%B6derstr%C3%B6m+Osakeyhti%C3%B6/Helsinki/yhteystiedot/147364) | |
| Websites | | Instagram (www.instagram.com/wsoykirjat/) | |
| Websites | | Homepage (www.wsoy.fi/) | |
| Copied Wikipedia parts under license : | | Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) | |