Payakkhin, A., P. Klomsakul, A. Nilsuwan, and V. Vachiraporn Funan. “DEVELOPING THE ABILITY TO DESIGN ASTRONOMY TEACHING ACTIVITIES USING STEM PLUS ASTRO ACTIVITIES FOR PRE-SERVICE TEACHERS”. Phranakhon Rajabhat Research Journal : Humanities and Social Sciences, vol. 20, no. 2, Dec. 2025, pp. 209-1, https://so05.tci-thaijo.org/index.php/PNRU_JHSS/article/view/283692.