http://e-repository.perpus.iainsalatiga.ac.id/11914
http://e-repository.perpus.iainsalatiga.ac.id/11911
http://e-repository.perpus.iainsalatiga.ac.id/17437
http://e-repository.perpus.iainsalatiga.ac.id/17443
http://e-repository.perpus.iainsalatiga.ac.id/13336