Gani, Muhammad Abdul, Amrullah, Ulfa Lu’luilmaknun, and Sudi Prayitno. “Comparison of Numerical Integration With Trapesium and Romberg Methods Using Hypertext Preprocessor Program”. Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) 5, no. 3 (August 27, 2024): 425–430. Accessed October 15, 2025. https://jpfis.unram.ac.id/index.php/GeoScienceEdu/article/view/394.