Jamaludin, J., Ramadhan, H. J. . and Hariyanto, D. (2020) “STUDI EKSPERIMEN PENGGUNAAN VALVE HEAD MUSHROOM DAN VALVE HEAD TULIP PADA RECIPROCATING ENGINE TERHADAP PERFORMA ENGINE”, Jurnal Penelitian, 5(3), pp. 214–221. doi: 10.46491/jp.v5i3.499.