http://e-repository.perpus.iainsalatiga.ac.id/17642
http://e-repository.perpus.iainsalatiga.ac.id/20051
http://e-repository.perpus.iainsalatiga.ac.id/19141
http://e-repository.perpus.iainsalatiga.ac.id/19894
http://e-repository.perpus.iainsalatiga.ac.id/20029