TONY DJUBIANTONO. UMUR ENDAPAN KWARTER DI DAERAH KALIUTER SOLO, JAWA TENGAH . AMERTA, [S. l.], v. 13, p. 1–4, 1993. Disponível em: https://ejournal.brin.go.id/amerta/article/view/15204. Acesso em: 27 apr. 2026.