http://e-repository.perpus.iainsalatiga.ac.id/9553
http://e-repository.perpus.iainsalatiga.ac.id/9573
http://e-repository.perpus.iainsalatiga.ac.id/9106
http://e-repository.perpus.iainsalatiga.ac.id/9102
http://e-repository.perpus.iainsalatiga.ac.id/9081