Wongphan, C., S. Thitirattanakan, and A. Wichaikun. “Approaches for Bull Fighting Event Tourism Brand Development of Songkla Province, Thailand”. Suan Dusit Graduate School Academic Journal, vol. 17, no. 2, June 2021, pp. 53-69, https://so19.tci-thaijo.org/index.php/SDUGSAJ/article/view/408.