ชุ่มวัฒนะ ชาคริต. “Ranks and Titles of the British Peerage”. Journal of the Faculty of Arts, Silpakorn University 40, no. 1 (April 30, 2019): 158–179. Accessed March 29, 2024. https://so04.tci-thaijo.org/index.php/jasu/article/view/186911.