http://e-repository.perpus.iainsalatiga.ac.id/17185
http://e-repository.perpus.iainsalatiga.ac.id/17923
http://e-repository.perpus.iainsalatiga.ac.id/17878
http://e-repository.perpus.iainsalatiga.ac.id/17449
http://e-repository.perpus.iainsalatiga.ac.id/17546