Sonsena, K., S. Namseethan, and P. Saengsai. “Development of Package with the Process of Backward Design Teaching on Interesting Economics for Grade 5 Students at Holy Redeemer Banphai School”. Journal of Graduate MCU KhonKaen Campus, vol. 11, no. 4, Dec. 2024, pp. 300-15, https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/270787.