http://e-repository.perpus.iainsalatiga.ac.id/18767
http://e-repository.perpus.iainsalatiga.ac.id/18441
http://e-repository.perpus.iainsalatiga.ac.id/18507
http://e-repository.perpus.iainsalatiga.ac.id/19238
http://e-repository.perpus.iainsalatiga.ac.id/18828