Piananurak, S., & Theekaprasertkul, P. (2024). TREATISE IN THE REIGN OF KING RAMA 3 : CONTENTS AND CONCEPTS. Phranakhon Rajabhat Research Journal : Humanities and Social Sciences, 19(1), 150–165. retrieved from https://so05.tci-thaijo.org/index.php/PNRU_JHSS/article/view/269137