http://e-repository.perpus.iainsalatiga.ac.id/10552
http://e-repository.perpus.iainsalatiga.ac.id/10341
http://e-repository.perpus.iainsalatiga.ac.id/10531
http://e-repository.perpus.iainsalatiga.ac.id/10448
http://e-repository.perpus.iainsalatiga.ac.id/8900