http://e-repository.perpus.iainsalatiga.ac.id/13677
http://e-repository.perpus.iainsalatiga.ac.id/13760
http://e-repository.perpus.iainsalatiga.ac.id/13642
http://e-repository.perpus.iainsalatiga.ac.id/13562
http://e-repository.perpus.iainsalatiga.ac.id/15259