http://e-repository.perpus.iainsalatiga.ac.id/9215
http://e-repository.perpus.iainsalatiga.ac.id/9334
http://e-repository.perpus.iainsalatiga.ac.id/9299
http://e-repository.perpus.iainsalatiga.ac.id/9798
http://e-repository.perpus.iainsalatiga.ac.id/9981