http://e-repository.perpus.iainsalatiga.ac.id/8582
http://e-repository.perpus.iainsalatiga.ac.id/8641
http://e-repository.perpus.iainsalatiga.ac.id/8500
http://e-repository.perpus.iainsalatiga.ac.id/8931
http://e-repository.perpus.iainsalatiga.ac.id/8604