Chainarong, Somnuek, and Areerat Phuthamma. “Factors on Marketing Mix of Rice Shop in Loei Town Municipality Loei Province”. Research and Development Journal, Loei Rajabhat University 16, no. 57 (July 19, 2021): 10–21. accessed September 29, 2026. https://so05.tci-thaijo.org/index.php/researchjournal-lru/article/view/164554.