Theslek, Aphichet, and Eakasit Phosa. “Development of Learning Achievement on Parts of Speech through an Innovation Kit Integrated with the Yoniso-manasikara Principle for Grade 6 Students: Development of Learning Achievement on Parts of Speech through an Innovation Kit Integrated with the Yoniso-manasikara Principle for Grade 6 Students”. Mahachula Academic Journal 13, no. 2 (April 28, 2026): 107–121. accessed October 12, 2026. https://so04.tci-thaijo.org/index.php/JMA/article/view/290115.