https://etd.repository.ugm.ac.id/penelitian/detail/2086182022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2088552022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2093342022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2097082022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2097732022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2112742022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2120852022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2153702022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2156282022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2184092022never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2187282022never1.0