제작사

http://sass-lang.com/guide

도구

css to scss - http://css2sass.herokuapp.com/

gui - http://koala-app.com/

강좌

http://soooprmx.com/wp/archives/5059

http://e-rooms.tistory.com/category/StyleSheet/SASS/SCSS

https://www.codingfactory.net/node/1011

https://sass-guidelin.es/ko/

https://opentutorials.org/course/470/2489

http://wit.nts-corp.com/2015/01/09/2936