PUSPITASARI, S. Sampul Depan 36 2 2018. Jurnal Penelitian Karet, [S. l.], v. 36, n. 2, p. i-xvi, 2021. DOI: 10.22302/ppk.jpk.v36i2.607. Disponível em: https://ejournal.puslitkaret.co.id/index.php/jpk/article/view/607. Acesso em: 3 jul. 2024.