http://e-repository.perpus.iainsalatiga.ac.id/10164
http://e-repository.perpus.iainsalatiga.ac.id/10192
http://e-repository.perpus.iainsalatiga.ac.id/12306
http://e-repository.perpus.iainsalatiga.ac.id/12304
http://e-repository.perpus.iainsalatiga.ac.id/11971