N. . Wongsang, W. . Kerdphol Prasopsak, and W. . Subruangthong, “The Implementation of the National Skill Standard Policy of the Lopburi Provincial Skilled Labor Development Center: The Implementation of the National Skill Standard Policy of the Lopburi Provincial Skilled Labor Development Center”, lawarathjo, vol. 3, no. 3, pp. 51–64, Dec. 2021.