“Comparison of the Effectiveness of Conventional PjBL and Green Chemistry Integrated PjBL on Learning Outcomes and 21st Century Skills: SLR”. Indo-MathEdu Intellectuals Journal 7, no. 1 (February 2, 2026): 1431–1442. Accessed August 12, 2026. https://ejournal.indo-intellectual.id/index.php/imeij/article/view/5034.