제목: Exploring Adolescent Happiness: Commitment, Purpose, and Fulfillment저자: Zipora MagenSAGE Publications, Inc; 1 edition (June 30, 1998) https://www.amazon.com/Exploring-Adolescent-Happiness-Commitment-Fulfillment/dp/0761907319/ref=sr_1_fkmr0_1?s=books&ie=UTF8&qid=1535267683&sr=1-1-fkmr0&keywords=modem+exploring+adolescent+happiness