http://e-repository.perpus.iainsalatiga.ac.id/13794
http://e-repository.perpus.iainsalatiga.ac.id/12537
http://e-repository.perpus.iainsalatiga.ac.id/11991
http://e-repository.perpus.iainsalatiga.ac.id/12525
http://e-repository.perpus.iainsalatiga.ac.id/11642