http://e-repository.perpus.iainsalatiga.ac.id/8572
http://e-repository.perpus.iainsalatiga.ac.id/8657
http://e-repository.perpus.iainsalatiga.ac.id/8667
http://e-repository.perpus.iainsalatiga.ac.id/8511
http://e-repository.perpus.iainsalatiga.ac.id/8624