Sophondilok, T., and K. Meteeworachat. “The Centralization of Siamese State in the Reign of King Chulualongkorn (Rama V), 1868-1910”. MCU Haripunchai Review, vol. 8, no. 1, Mar. 2024, pp. 284-00, https://so04.tci-thaijo.org/index.php/JMHR/article/view/a018.