http://e-repository.perpus.iainsalatiga.ac.id/9631
http://e-repository.perpus.iainsalatiga.ac.id/9685
http://e-repository.perpus.iainsalatiga.ac.id/11521
http://e-repository.perpus.iainsalatiga.ac.id/11908
http://e-repository.perpus.iainsalatiga.ac.id/12059