Pewkam, Wichaya, Somphong Chitradub, and Aumpond Makanong. 2020. “A Development of the Process for Enhancing Teacher Leadership of Preservice Teachers Based on Transformative Learning Theory and Collaborative Inquiry Concept”. Rajapark Journal 14 (33). Bangkok, Thailand:229-43. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/241234.