Jackha ธนากร, and Mankong ชัยอนันต์. 2021. “Guidelines for the Implementation of Sufficiency Economy Philosophy in Vocational Education Administration in Saraburi Province”. Mahachula Academic Journal 8 (3). Bangkok, Thailand:167-76. https://so04.tci-thaijo.org/index.php/JMA/article/view/249605.