http://e-repository.perpus.iainsalatiga.ac.id/19043
http://e-repository.perpus.iainsalatiga.ac.id/19348
http://e-repository.perpus.iainsalatiga.ac.id/19149
http://e-repository.perpus.iainsalatiga.ac.id/19792
http://e-repository.perpus.iainsalatiga.ac.id/19903