JPK, admin. Sampul Depan 37 1 2019: Sampul Depan 37 1 2019. Jurnal Penelitian Karet, [S. l.], v. 37, n. 1, 2021. Disponível em: https://ejournal.puslitkaret.co.id/index.php/jpk/article/view/745. Acesso em: 22 nov. 2024.