http://e-repository.perpus.iainsalatiga.ac.id/8578
http://e-repository.perpus.iainsalatiga.ac.id/8577
http://e-repository.perpus.iainsalatiga.ac.id/8384
http://e-repository.perpus.iainsalatiga.ac.id/8318
http://e-repository.perpus.iainsalatiga.ac.id/8001/