Hamdani, M., Prayitno, B. A. and Karyanto, P. (2020) “Demonstration and experiment on archaebacteria and eubacteria: effectiveness for cognitive learning outcomes (CLO) based on critical thinking skill”, Biosfer: Jurnal Pendidikan Biologi, 13(1), pp. 75 - 85. doi: 10.21009/biosferjpb.v13n1.75-85.