http://e-repository.perpus.iainsalatiga.ac.id/12973
http://e-repository.perpus.iainsalatiga.ac.id/13147
http://e-repository.perpus.iainsalatiga.ac.id/13175
http://e-repository.perpus.iainsalatiga.ac.id/13110
http://e-repository.perpus.iainsalatiga.ac.id/13111