ในจิตร์ ธ., ปวงสุข ภ., and โรจน์นิรุตติกุล ณ. “Marketing Mix for Buying Decision of Beer Products of Consumers in Bangkok Metropolitan”. Journal of Industrial Education, vol. 14, no. 3, Dec. 2015, pp. 712-7, https://ph01.tci-thaijo.org/index.php/JIE/article/view/123016.