https://etd.repository.ugm.ac.id/penelitian/detail/1969172021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1969282021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1971092021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1976162021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1993702021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1994962021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2010342021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2031682021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2032382021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2032672021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2033382021never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2057032021never1.0