Ratnasari, D., S. Suciati, and M. Maridi. “Empowering Scientific Thinking Skills through Creative Problem Solving With Scaffolding Learning”. JPBI (Jurnal Pendidikan Biologi Indonesia), vol. 5, no. 1, Feb. 2019, pp. 61-68, doi:10.22219/jpbi.v5i1.7135.