http://e-repository.perpus.iainsalatiga.ac.id/8687
http://e-repository.perpus.iainsalatiga.ac.id/9231
http://e-repository.perpus.iainsalatiga.ac.id/9732
http://e-repository.perpus.iainsalatiga.ac.id/9826
http://e-repository.perpus.iainsalatiga.ac.id/9427