칙필레 'Chick-fil-a'
Youtube : https://youtu.be/SNgLQF8IBnY
책 이름 : 사소한 것들
저자 : 앤디 앤드루스
출판사 : 세종서적
참고자료 : https://www.entrepreneur.com/article/320615
http://www.koreadaily.com/news/read.asp?art_id=6352351
http://www.koreadaily.com/news/read.asp?art_id=6242272
http://economychosu