(1)
Soeparno, K. .; Andayani , B. . Two of the Four Great Thinkers from Yogyakarta: Ki Hadjar Dewantara and Ki Ageng Suryomentram, Humanitarian Fighter and Initiator of Cultured Character Education. Intl. Conf. on Indigenous Psy. n Cult 2023, 1, 1-11.