Ketpet, S. ., C. Saema, and N. . Namvises. “A STUDY OF THE DIVERSITY OF FOOD CROPS AND OPPORTUNITY TO TAKE ADVANTAGE TO STRENGTHENING THE HEALTH OF THE ELDERLY”. Journal of MCU Nakhondhat, vol. 10, no. 1, Jan. 2023, pp. 14-27, https://so03.tci-thaijo.org/index.php/JMND/article/view/268189.