Sirisan, P., & Kkokong, K. (2021). DESINING THE WALLET PRODUCT FOR A MEN PARTTERN IDENTITY FROM PHI TA KHON, LOEI. PSRU Journal of Industrial Technology and Engineering, 3(2), 124–137. retrieved from https://ph02.tci-thaijo.org/index.php/psru-jite/article/view/243992