Sinaga, D. A., I. Harahap, N. F. Marbun, Ravisa, Sazkia, and R. A. Samosir. “The Effect of Learning Methods on Student Participation and Achievement in Chemistry Education”. META: Journal of Science and Technological Education, vol. 4, no. 2, Dec. 2025, pp. 154-63, https://meta.amiin.or.id/index.php/meta/article/view/152.