http://e-repository.perpus.iainsalatiga.ac.id/16034
http://e-repository.perpus.iainsalatiga.ac.id/15904
http://e-repository.perpus.iainsalatiga.ac.id/17558
http://e-repository.perpus.iainsalatiga.ac.id/17662
http://e-repository.perpus.iainsalatiga.ac.id/17836