http://e-repository.perpus.uinsalatiga.ac.id/17931/
http://e-repository.perpus.iainsalatiga.ac.id/17392
http://e-repository.perpus.iainsalatiga.ac.id/17588
http://e-repository.perpus.iainsalatiga.ac.id/13707
http://e-repository.perpus.iainsalatiga.ac.id/17215