อภินนฺโท พ. “FOUR BRAHMAVIHARA AND A WAY OF LIFE OF THE ELDERLY IN UTHAI DISTRICT PHRNAKONSRI AYUTTHAYA PROVINCE”. Journal of MCU Humanities Review, vol. 3, no. 2, Aug. 2018, pp. 31-39, https://so03.tci-thaijo.org/index.php/human/article/view/138253.