Phon-ngam, P. “Adding Value from Culture and Local Wisdom of Loincloth in Loei Province Toward Creative Economy”. KKU Research Journal (Graduate Studies) Humanities and Social Sciences, vol. 7, no. 3, Nov. 2019, pp. 146-58, https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/226991.