Koprasert, Kanokpatch, Natpasuth Patthirasinsiri, Nittaya Ngamyingyong, and Jirawat Kongka. 2020. “Development of Electronic Pocket Book ‘ Business Tips Bettas Fish Millionaire By Using OMNI Channel Marketing Strategy’”. Journal of Vongchavalitkul University 33 (1):58-69. https://ph01.tci-thaijo.org/index.php/vujournal/article/view/240274.