http://e-repository.perpus.iainsalatiga.ac.id/12250
http://e-repository.perpus.iainsalatiga.ac.id/18101
http://e-repository.perpus.iainsalatiga.ac.id/18276
http://e-repository.perpus.iainsalatiga.ac.id/18575
http://e-repository.perpus.iainsalatiga.ac.id/18182
http://e-repository.perpus.iainsalatiga.ac.id/18850