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Andrea, Cornellia Brigita Stella (2022) Hubungan antara Problem Focused Coping dan Optimisme dengan Psychological Well Being pada Dewasa Awal di Fase Quarter Life Crisis. (The Relationship between Problem Focused Coping and Optimisme With Psychological Well Being in Early Adulthood Phase Quarter Life Crisis). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.