http://e-repository.perpus.iainsalatiga.ac.id/11664
http://e-repository.perpus.iainsalatiga.ac.id/11384
http://e-repository.perpus.iainsalatiga.ac.id/11597
http://e-repository.perpus.iainsalatiga.ac.id/11159
http://e-repository.perpus.iainsalatiga.ac.id/10882