2015.04.16~2015.04.30
參考連結
http://blog.humblebundle.com/post/117098569698/the-humble-underground-book-bundle-presented-by
http://blog.humblebundle.com/post/116481544959/get-your-subculture-art-fix-with-humble
http://us7.campaign-archive1.com/?u=a42731fd3353ff4c76f7f11bb&id=8b43dc1f64
http://us7.campaign-archive2.com/?u=a42731fd3353ff4c76f7f11bb&id=95cfd46424