http://e-repository.perpus.iainsalatiga.ac.id/13012
http://e-repository.perpus.iainsalatiga.ac.id/13250
http://e-repository.perpus.iainsalatiga.ac.id/13267
http://e-repository.perpus.iainsalatiga.ac.id/13578
http://e-repository.perpus.iainsalatiga.ac.id/13320