http://e-repository.perpus.iainsalatiga.ac.id/12562
http://e-repository.perpus.iainsalatiga.ac.id/12653
http://e-repository.perpus.iainsalatiga.ac.id/10908
http://e-repository.perpus.iainsalatiga.ac.id/13155
http://e-repository.perpus.iainsalatiga.ac.id/12977