Wahyudi, Wahyudi. “Correlation of The Physical Properties of Nyamplung Oil-Based Biodiesel: Density, Viscosity, Calorific Value, and Flash Point”. Journal Research of Social Science, Economics, and Management 4, no. 10 (May 31, 2025): 1295–1306. Accessed December 5, 2025. https://jrssem.publikasiindonesia.id/index.php/jrssem/article/view/840.