http://e-repository.perpus.iainsalatiga.ac.id/19080
http://e-repository.perpus.iainsalatiga.ac.id/18841
http://e-repository.perpus.iainsalatiga.ac.id/19323
http://e-repository.perpus.iainsalatiga.ac.id/19167
http://e-repository.perpus.iainsalatiga.ac.id/19010