https://etd.repository.ugm.ac.id/penelitian/detail/2078622022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2078692022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2095142022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2098642022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2104932022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2110362022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2113462022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2120742022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2183642022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2185272022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2189842022never1.0