Muangjaroen, Jaruwan, Ratthaya Phanitchai, and Sittiphat Lerdsrichainon. “Factors Influencing the Purchase Decision Process for Herbal Products under the Jiva Herb Brand”. Research and Development Journal, Loei Rajabhat University 21, no. 75 (March 13, 2026): 73–88. accessed September 29, 2026. https://so05.tci-thaijo.org/index.php/researchjournal-lru/article/view/281605.