http://e-repository.perpus.iainsalatiga.ac.id/18830
http://e-repository.perpus.iainsalatiga.ac.id/18571
http://e-repository.perpus.iainsalatiga.ac.id/18316
http://e-repository.perpus.iainsalatiga.ac.id/19082
http://e-repository.perpus.iainsalatiga.ac.id/19254