http://e-repository.perpus.iainsalatiga.ac.id/18532
http://e-repository.perpus.iainsalatiga.ac.id/18345
http://e-repository.perpus.iainsalatiga.ac.id/18677
http://e-repository.perpus.iainsalatiga.ac.id/18647
http://e-repository.perpus.iainsalatiga.ac.id/20001