Penphon, Metawee. “THE GUIDELINE OF ADMINISTRATION PROMOTION OF THE SUFFICIENCY ECONOMY PHILOSOPHY IN DIGITAL AGE OF SCHOOLS UNDER NONTHABURI PRIMARY EDUCATION SERVICE AREA OFFICE 2”. Academic Journal Phranakhon Rajabhat University 12, no. 1 (June 10, 2021): 32–42. Accessed May 21, 2024. https://so01.tci-thaijo.org/index.php/AJPU/article/view/247790.