https://etd.repository.ugm.ac.id/penelitian/detail/2516282025never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2556622025never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2559242025never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2561462025never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2564742025never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2565172025never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2595302025never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2596222025never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2669882025never1.0