SuhendraI., SopandiW., SaudU. S., HandayaniH., WiliiamN., MaulanaY., and GunawanI. “The Development and Validation of RADEC Learning Model-Based Student Worksheets for Natural and Social Sciences (IPAS) Subjects”. International Conference on Elementary Education, Vol. 6, no. 1, June 2024, pp. 215-21, http://proceedings.upi.edu/index.php/icee/article/view/3619.