Jinnupong, P. “The Influence of Brand Personality, Consumer’s Purchase Intention, and Attitude Toward Brand on Brand Loyalty in Multi-Level Direct Sales”. Economics and Business Administration Journal Thaksin University, vol. 14, no. 3, June 2022, pp. 159-72, https://so01.tci-thaijo.org/index.php/ecbatsu/article/view/249166.