http://e-repository.perpus.iainsalatiga.ac.id/14527
http://e-repository.perpus.iainsalatiga.ac.id/15296
http://e-repository.perpus.iainsalatiga.ac.id/15137
http://e-repository.perpus.iainsalatiga.ac.id/17638
http://e-repository.perpus.iainsalatiga.ac.id/17598