Sudargo, Fransisca, and Hernawati Hernawati. 2017. “Analyses of Using Determination Key on Vertebrate Zoology Course to Improve Classification Ability and Concept Atainment of Biology Education Students”. Jurnal Pendidikan Sains Dan Matematik Malaysia 7 (1):68-75. https://doi.org/10.37134/jpsmm.vol7.no1.6.2017.