http://e-repository.perpus.iainsalatiga.ac.id/18361
http://e-repository.perpus.iainsalatiga.ac.id/17808
http://e-repository.perpus.iainsalatiga.ac.id/17508
http://e-repository.perpus.iainsalatiga.ac.id/14239
http://e-repository.perpus.iainsalatiga.ac.id/14007