ขุนสิทธิ์ ธ. 2018. THE PHILOSOPHY OF SUFFICIENCY ECONOMY PRINCIPLES APPLIED IN THE LIFE OF THE PEOPLE MOO 5 TAMBON NA PHRU, PHRA PHROM DISTRIC, NAKHON SI THAMMARAT PROVINCE. Journal of MCU Nakhondhat. 5, 3 (Dec. 2018), 914–925.