S. Boonmee, P. Amornkitpinyo, and T. Na Soontorn, “FACTORS AND INDICATORS OF ACADEMIC LEADERSHIP OF DIRECTORS OF DISTRICT NON-FORMAL EDUCATION AND INFORMAL CENTERS UNDER THE OFFICE OF THE NON-FORMAL AND INFORMAL EDUCATION: NFE”, MCU SSR, vol. 12, no. 4, pp. 351–364, Aug. 2023.