http://e-repository.perpus.iainsalatiga.ac.id/8450
http://e-repository.perpus.iainsalatiga.ac.id/8522
http://e-repository.perpus.iainsalatiga.ac.id/8461
http://e-repository.perpus.iainsalatiga.ac.id/8638
http://e-repository.perpus.iainsalatiga.ac.id/8998