Pongnairat, Kantima Pongnairat. 2020. “Factors Related to Transformational Relationships in Relation to The Operational Effectiveness of Local Organization’s Employee in Rayong Province”. Rajamangala University of Technology Tawan-Ok Social Science Journal 9 (2):21-27. https://so05.tci-thaijo.org/index.php/SocialJournal2rmutto/article/view/248526.