Muangjaroen, Jaruwan, Ratthaya Phanitchai, and Sittiphat Lerdsrichainon. 2026. “Factors Influencing the Purchase Decision Process for Herbal Products under the Jiva Herb Brand”. Research and Development Journal, Loei Rajabhat University 21 (75):73-88. https://doi.org/10.14456/lruj.2026.6.