“The Effect of Formative Assessment on the Cognitive Learning Outcomes of Fourth-Semester Students in the Biology Education Study Program, Academic Year 2015 2016, Universitas Cendrawasih”. Celebes Biodiversitas, vol. 1, no. 1, Jan. 2018, pp. 38-42, https://ojs.unpatompo.ac.id/index.php/cb/article/view/569.