Strength Analysis of Betelnut Fiber-Reinforced Resin Composite . Jurnal Teknik Mesin, [S. l.], v. 6, n. 2, p. 87–92, 2016. DOI: 10.21063/jtm.2016.v6.i2.87-92. Disponível em: https://jtm.itp.ac.id/index.php/jtm/article/view/470. Acesso em: 25 agu. 2025.