http://e-repository.perpus.iainsalatiga.ac.id/15917
http://e-repository.perpus.iainsalatiga.ac.id/12255
http://e-repository.perpus.iainsalatiga.ac.id/17391
http://e-repository.perpus.iainsalatiga.ac.id/17425
http://e-repository.perpus.iainsalatiga.ac.id/17505