Rumapea, L. et al. 2026. 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 : Jurnal Ilmiah Biologi. 14, 1 (Feb. 2026), 82–92. DOI:https://doi.org/10.33394/bioscientist.v14i1.19762.