http://e-repository.perpus.iainsalatiga.ac.id/17400
http://e-repository.perpus.iainsalatiga.ac.id/17602
http://e-repository.perpus.iainsalatiga.ac.id/17288
http://e-repository.perpus.iainsalatiga.ac.id/17397
http://e-repository.perpus.iainsalatiga.ac.id/17351