http://e-repository.perpus.iainsalatiga.ac.id/11737
http://e-repository.perpus.iainsalatiga.ac.id/11497
http://e-repository.perpus.iainsalatiga.ac.id/12120
http://e-repository.perpus.iainsalatiga.ac.id/12653
http://e-repository.perpus.iainsalatiga.ac.id/12562