L. Rumapea, M. Sinambela, and M. Silitonga, “The Effectiveness of an Environment-Based Biodiversity Flipbook E-Module on Students’ Biology Understanding and Scientific Process Skills in Grade X of SMA Negeri 21 Medan”, Bioscientist j. ilm. bosbiol., vol. 14, no. 1, pp. 82–92, Feb. 2026.