Istiani, Riris, Eka Putri Azrai, and Yoswita Rustam. 2018. “Effect of Application of Team Assisted Individualization of Biology Learning Model Of Student Interest in the Pteridophyta Material at SMAN 39 Jakarta”. Biosfer: Jurnal Pendidikan Biologi 7 (1), 37-42. https://doi.org/10.21009/biosferjpb.7-1.6.