Karyuatry, L., J. Nurkamto, and D. . Rochsantiningsih. “AUTHENTIC MATERIALS FOR FRESHMEN STUDENTS: A CASE OF SPEAKING CLASS IN A PRIVATE UNIVERSITY”. International Online Journal of Education and Teaching, vol. 7, no. 2, Apr. 2020, pp. 553-65, https://iojet.org/index.php/IOJET/article/view/789.