สัมพัทธ์พงศ์ พรพิมล. “Consumer’s Buying Decision Behavior on Supplementary Food in Nonthaburi Province”. Journal of Humanities and Social Sciences, Rajapruk University 5, no. 2 (September 30, 2019): 67–79. accessed September 1, 2026. https://so03.tci-thaijo.org/index.php/rpu/article/view/220524.