Muslim, M., and S. N. S. . Sidabutar. “Analisa Pressure Vacuum Relief Valve”. Jurnal Rekayasa Mesin Dan Inovasi Teknologi, vol. 3, no. 1, July 2022, pp. 161-6, https://jurnal.ftm.uniba-bpn.ac.id/index.php/REMIT/article/view/39.