https://etd.repository.ugm.ac.id/penelitian/detail/1539002018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1542352018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1543732018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1544162018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1545492018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1545762018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1561902018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1562932018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1565962018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1567272018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1568182018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1573742018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1615672018never1.0