http://e-repository.perpus.iainsalatiga.ac.id/9282
http://e-repository.perpus.iainsalatiga.ac.id/9304
http://e-repository.perpus.iainsalatiga.ac.id/9155
http://e-repository.perpus.iainsalatiga.ac.id/9106
http://e-repository.perpus.iainsalatiga.ac.id/9264