(Wanichat), P. T. D., Wongpornpawan, C., Rajpariyativimol, P., Kaewketpong, P., & Subharamedhi, P. S. (2019). The Ethics: The Gratefulness for a Previous Benefactor. Dhammathas Academic Journal, 19(4), 245–254. retrieved from https://so06.tci-thaijo.org/index.php/dhammathas/article/view/147515