Kaewwichit, Hatsadin. “A Study of Antecedents and Consequences of Academic Motivation of Rajabhat University Students in Upper Northeastern Provinces: A Testing of Self-Determination Theory”. The Periodical of Behavioral Science 22, no. 2 (July 30, 2016): 49–64. Accessed May 8, 2024. https://so06.tci-thaijo.org/index.php/BSRI/article/view/39916.