교보
https://twitter.com/kyobobookstory/status/1316521282515529730?s=19

예사
3종세트 http://m.yes24.com/Goods/Detail/93776152
A형 http://m.yes24.com/Goods/Detail/93775845
B형 http://m.yes24.com/Goods/Detail/93775847
C형 http://m.yes24.com/Goods/Detail/93775856

알라딘
A형 http://aladin.kr/p/by256
B형 http://aladin.kr/p/Uy256
C형 http://aladin.kr/p/4y20k

인팤
A형 http://mbook.interpark.com/shop/product/detail?prdNo=340331938
B형 http://mbook.interpark.com/shop/product/detail?prdNo=340332129
C형 http://mbook.interpark.com/shop/product/detail?prdNo=340331945