SIAHAAN, Saloom Hilton. Kajian Karakteristik Terhadap Material Dalam Pengembangan Prototipe Berbasis Limbah Piston Bekas. Innovative: Journal Of Social Science Research, [S. l.], v. 5, n. 1, p. 2825–2835, 2025. DOI: 10.31004/innovative.v5i1.18015. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/18015. Acesso em: 26 may. 2026.