มาระโภชน์ ปฐมารัตน์. “Teaching Learning Activity Using CIPPA in Developing Writing Skill of the bachelor’s Degree Students Rajabhat Rajanagarindra University”. Journal of KMITL Business school 10, no. 1 (April 16, 2020): 24–37. Accessed May 4, 2024. https://so02.tci-thaijo.org/index.php/fam/article/view/237970.