http://e-repository.perpus.iainsalatiga.ac.id/10421
http://e-repository.perpus.iainsalatiga.ac.id/10444
http://e-repository.perpus.iainsalatiga.ac.id/11202
http://e-repository.perpus.iainsalatiga.ac.id/12016
http://e-repository.perpus.iainsalatiga.ac.id/13156