Ramos, Charmen D., and Reynaldo B. Inocian. “Design Thinking for Virtual Teaching of World History towards 21st Century Skills Development”.
Journal of Research, Policy & Practice of Teachers and Teacher Education 12, no. 1 (June 16, 2022): 15–33. Accessed April 5, 2025.
https://ejournal.upsi.edu.my/index.php/JRPPTTE/article/view/5603.