http://e-repository.perpus.iainsalatiga.ac.id/13803
http://e-repository.perpus.iainsalatiga.ac.id/13359
http://e-repository.perpus.iainsalatiga.ac.id/17729
http://e-repository.perpus.iainsalatiga.ac.id/18466
http://e-repository.perpus.iainsalatiga.ac.id/17619