(Phumen), P. B. P. ., P. B. P. . (Phumen), and P. N. . Ñāṇasiddhi . (Siriwang). “Physical Contemplation of the Four Foundations of Mindfulness Approach”. Journal of Dhamma for Life, vol. 30, no. 1, Mar. 2024, pp. 85-95, https://so08.tci-thaijo.org/index.php/dhammalife/article/view/1782.