Bustami, Yakobus, Yance Riyati, and Hendrikus Julung. 2019. “Think Talk Write With Pictured Cards on Human Digestive System: Impact of Critical Thinking Skills”. Biosfer: Jurnal Pendidikan Biologi 12 (1):13-23. https://doi.org/10.21009/biosferjpb.v12n1.13-23.