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Rosafa, Najunda Duhita Rahmadina (2023) Implementasi Nilai Dasar "AKHLAK" dalam Handling Customer Complaint di PT Jasamarga Tollroad Operator Ruas Tol Krian-Gresik. (Implementation of the Basic Values of "AKHLAK" in Handling Customer Complaints at PT Jasamarga Tollroad Operator of the Krian-Gresik Toll Road Section). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.