พึงวัฒนานุกูล ผ. Marketing Mix Strategy in Buying Decision Making of the Royal Project’s Organic Vegetables of the Elderly in Bangkok. ptujournal [Internet]. 2019 Jun. 14 [cited 2024 Apr. 25];11(1):278-82. Available from: https://so05.tci-thaijo.org/index.php/ptujournal/article/view/188460