http://e-repository.perpus.iainsalatiga.ac.id/17660
http://e-repository.perpus.iainsalatiga.ac.id/17911
http://e-repository.perpus.iainsalatiga.ac.id/17348
http://e-repository.perpus.iainsalatiga.ac.id/18880
http://e-repository.perpus.iainsalatiga.ac.id/18828