http://e-repository.perpus.iainsalatiga.ac.id/10483
http://e-repository.perpus.iainsalatiga.ac.id/10894
http://e-repository.perpus.iainsalatiga.ac.id/10766
http://e-repository.perpus.iainsalatiga.ac.id/10959
http://e-repository.perpus.iainsalatiga.ac.id/11637