Reffiane, Fine, Sudarmin Sudarmin, Wiyanto Wiyanto, and Sigit Saptono. “Developing an Instrument to Assess students’ Problem-Solving Ability on Hybrid Learning Model Using Ethno-STEM Approach through Quest Program”. Pegem Journal of Education and Instruction 11, no. 4 (October 6, 2021): 1–8. Accessed June 24, 2025. https://pegegog.net/index.php/pegegog/article/view/1347.