http://e-repository.perpus.iainsalatiga.ac.id/10068
http://e-repository.perpus.iainsalatiga.ac.id/9952
http://e-repository.perpus.iainsalatiga.ac.id/10427
http://e-repository.perpus.iainsalatiga.ac.id/10211
http://e-repository.perpus.iainsalatiga.ac.id/10299