https://etd.repository.ugm.ac.id/penelitian/detail/1971862021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1972482021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1972972021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1975192021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1975462021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1992992021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1995662021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2043932021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2044462021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2045132021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2045152021never1.0