http://e-repository.perpus.iainsalatiga.ac.id/17676
http://e-repository.perpus.iainsalatiga.ac.id/17706
http://e-repository.perpus.iainsalatiga.ac.id/16854
http://e-repository.perpus.iainsalatiga.ac.id/17218
http://e-repository.perpus.iainsalatiga.ac.id/17359