Warner, Langdon, and ฮั่นตระกูล พรเพ็ญ. “Tea, Garden, and Zen”. Journal of the Faculty of Arts, Silpakorn University 21, no. 1 (April 19, 2021): 15–37. accessed August 29, 2026. https://so04.tci-thaijo.org/index.php/jasu/article/view/250227.