https://etd.repository.ugm.ac.id/penelitian/detail/2350462024never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2354912024never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2377932024never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2390222024never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2393542024never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2456282024never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2459872024never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2478912024never1.0