PUSPITASARI, S. Sampul Belakang 36 2 2018. Jurnal Penelitian Karet, [S. l.], v. 36, n. 2, p. xvii-xxii, 2021. DOI: 10.22302/ppk.jpk.v36i2.608. Disponível em: https://ejournal.puslitkaret.co.id/index.php/jpk/article/view/608. Acesso em: 22 dec. 2024.