Henny Setiawati, Asti Setiawati, Nur Ismirawati, and Asrullah Syam. “Development of Student Worksheets (LKPD) Based on Critical Thinking Skills Environmental Change and Waste Recycling Materials”. Pegem Journal of Education and Instruction, vol. 13, no. 4, July 2023, pp. 1-12, doi:10.47750/pegegog.13.04.01.