Hongpukdee, N., and S. Hongpukdee. “Costs of Candle Making: A Local Wisdom in the Candle Festival of Ubon Ratchathani Province”. Executive Journal, vol. 36, no. 2, July 2016, pp. 62-78, https://so01.tci-thaijo.org/index.php/executivejournal/article/view/81356.