Somvipat, Wichien. 2020. “A STUDY OF MARKETING MIX FACTORS AND BEHAVIORS OF FRESH COFFEE DRINKERS ALL CAFÉ COFFEE SHOPS IN NAKHON SAWAN PROVINCE”. Journal of MCU Nakhondhat 7 (12). Nakhon Si Thammarat, Thailand:160-77. https://so03.tci-thaijo.org/index.php/JMND/article/view/249104.