(1978). Agro Ekonomi. Department of Agricultural Socio-Economics, Faculty of Agriculture, Universitas Gadjah Mada.
Cita Chicago Style (17a ed.)Agro Ekonomi. Yogyakarta: Department of Agricultural Socio-Economics, Faculty of Agriculture, Universitas Gadjah Mada, 1978.
Cita MLA (9a ed.)Agro Ekonomi. Department of Agricultural Socio-Economics, Faculty of Agriculture, Universitas Gadjah Mada, 1978.
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