http://e-repository.perpus.iainsalatiga.ac.id/11270
http://e-repository.perpus.iainsalatiga.ac.id/11872
http://e-repository.perpus.iainsalatiga.ac.id/11770
http://e-repository.perpus.iainsalatiga.ac.id/10883
http://e-repository.perpus.iainsalatiga.ac.id/10876