http://e-repository.perpus.iainsalatiga.ac.id/19487
http://e-repository.perpus.iainsalatiga.ac.id/19016
http://e-repository.perpus.iainsalatiga.ac.id/18971
http://e-repository.perpus.iainsalatiga.ac.id/19134
http://e-repository.perpus.iainsalatiga.ac.id/19312