Penboon, Mai. “Four Brahmavihara, Family Relationship and Psychological Well-being of People at Ladphrao District, Bangkok”. Mahachula Academic Journal 11, no. 2 (August 26, 2024): 197–216. accessed October 1, 2026. https://so04.tci-thaijo.org/index.php/JMA/article/view/267011.