WIDYASARI, T.; ROUF, A. PENGARUH PRODUKTIVITAS TERHADAP HARGA POKOK KEBUN KARET DI JAWA TENGAH. Jurnal Penelitian Karet, [S. l.], v. 1, n. 1, p. 93–102, 2017. DOI: 10.22302/ppk.jpk.v1i1.327. Disponível em: https://ejournal.puslitkaret.co.id/index.php/jpk/article/view/327. Acesso em: 3 jul. 2024.