Tinjauan yuridis tentang perjanjian tukar tambah kendaraan bermotor dan permasalahannya (studi di Daerah Istimewa Yogyakarta) = Legal Review of The Trade-In Contract for Exchange of Motor Vehicles and Its Problems.. - Perpustakaan UGM, i-lib ([Yogyakarta] : Universitas Gadjah Mada, 1995)