제목: The High Price of Materialism 저자: Tim Kasser A Bradford Book (August 29, 2003) https://www.amazon.com/High-Price-Materialism-Tim-Kasser/dp/026261197X/ref=sr_1_1?s=books&ie=UTF8&qid=1535414300&sr=1-1&keywords=the+high+price+of+materialism
