http://e-repository.perpus.iainsalatiga.ac.id/9282
http://e-repository.perpus.iainsalatiga.ac.id/9109
http://e-repository.perpus.iainsalatiga.ac.id/9209
http://e-repository.perpus.iainsalatiga.ac.id/9155
http://e-repository.perpus.iainsalatiga.ac.id/8822