제목: The Psychology of Happiness 저자: Michael Argyle Routledge; 2 edition (January 13, 2002) https://www.amazon.com/Psychology-Happiness-Michael-Argyle/dp/0415226651/ref=sr_1_1?s=books&ie=UTF8&qid=1535267892&sr=1-1&keywords=the+psychology+of+happiness
