http://e-repository.perpus.iainsalatiga.ac.id/13679
http://e-repository.perpus.iainsalatiga.ac.id/13629
http://e-repository.perpus.iainsalatiga.ac.id/13660
http://e-repository.perpus.iainsalatiga.ac.id/13743
http://e-repository.perpus.iainsalatiga.ac.id/13798