http://e-repository.perpus.iainsalatiga.ac.id/17598
http://e-repository.perpus.iainsalatiga.ac.id/17462
http://e-repository.perpus.iainsalatiga.ac.id/17768
http://e-repository.perpus.iainsalatiga.ac.id/17596
http://e-repository.perpus.iainsalatiga.ac.id/18140