http://e-repository.perpus.iainsalatiga.ac.id/11901
http://e-repository.perpus.iainsalatiga.ac.id/11814
http://e-repository.perpus.iainsalatiga.ac.id/11943
http://e-repository.perpus.iainsalatiga.ac.id/10814
http://e-repository.perpus.iainsalatiga.ac.id/10821