http://e-repository.perpus.iainsalatiga.ac.id/9867
http://e-repository.perpus.iainsalatiga.ac.id/9709
http://e-repository.perpus.iainsalatiga.ac.id/9568
http://e-repository.perpus.iainsalatiga.ac.id/10048
http://e-repository.perpus.iainsalatiga.ac.id/9418