http://e-repository.perpus.iainsalatiga.ac.id/10392
http://e-repository.perpus.iainsalatiga.ac.id/9764
http://e-repository.perpus.iainsalatiga.ac.id/9756
http://e-repository.perpus.iainsalatiga.ac.id/9739
http://e-repository.perpus.iainsalatiga.ac.id/10394