PUSPITASARI, S. Sampul Belakang 35 1 2017. Jurnal Penelitian Karet, [S. l.], v. 1, n. 1, p. xix-xxiv, 2018. DOI: 10.22302/ppk.jpk.v1i1.434. Disponível em: https://ejournal.puslitkaret.co.id/index.php/jpk/article/view/434. Acesso em: 3 jul. 2024.