S. Phonrawatjaradwat, R. Klyprayong, S. Jaisook, and S. Pinyanin, “A Needs Assessment Study for the Development of a Training Curriculum to Enhance 21st-Century Learning Management Competencies of Teachers in Surat Thani Province”, IARJ, vol. 6, no. 5, p. e299672, Sep. 2026.