http://e-repository.perpus.iainsalatiga.ac.id/18012
http://e-repository.perpus.iainsalatiga.ac.id/18630
http://e-repository.perpus.iainsalatiga.ac.id/18114
http://e-repository.perpus.iainsalatiga.ac.id/18719
http://e-repository.perpus.iainsalatiga.ac.id/18370