“ANALISA PERBANDINGAN KOMPOSISI UNSUR Mg TERHADAP PEMBULATAN GRAFIT DAN KEKERASAN PRODUK PRESSURE PLATE ”. Journal Foundry, vol. 5, no. 2, July 2022, pp. 38-45, https://e-journal.polmanceper.ac.id/index.php/foundry/article/view/47.