Pinitpouvadol, Sidtha. 1984. “A Comparative Study on the Thought of Ideal Society in Literature: Trai Phumi Pra Ruang, Utopia and Tao-Te-Ching”. Kasetsart Journal of Social Sciences 5 (2):93-114. https://so04.tci-thaijo.org/index.php/kjss/article/view/243352.