Santoso, H. ., P. . Harjati, A. . Sujarwanta, A. . Achyani, and A. . Sutanto. “Unveiling Research Gaps in Biology Teaching Materials for Secondary Science Education: A Bibliometric Review of Scopus (2000–2024)”. International Journal of Learning, Teaching and Educational Research, vol. 24, no. 6, June 2025, pp. 689-0, https://ijlter.myres.net/index.php/ijlter/article/view/2372.