http://e-repository.perpus.iainsalatiga.ac.id/14478
http://e-repository.perpus.iainsalatiga.ac.id/14512
http://e-repository.perpus.iainsalatiga.ac.id/14527
http://e-repository.perpus.iainsalatiga.ac.id/14659
http://e-repository.perpus.iainsalatiga.ac.id/14696