Sanusi Noor, Dewi, Nahadi, and Hernani. “Development of a Virtual Test to Measure Mastery of Green Chemistry Material”. International Journal of Educational Research Excellence (IJERE) 2, no. 2 (September 25, 2023): 351–356. Accessed July 3, 2024. https://ejournal.ipinternasional.com/index.php/ijere/article/view/489.