http://e-repository.perpus.iainsalatiga.ac.id/15955
http://e-repository.perpus.iainsalatiga.ac.id/17582
http://e-repository.perpus.iainsalatiga.ac.id/13048
http://e-repository.perpus.iainsalatiga.ac.id/17732
http://e-repository.perpus.iainsalatiga.ac.id/17608