Suthinan Pomsuwan (2021) “A Study of Personal Characteristics, Transactional Leadership, and Transformational Leadership Affecting Organizational Citizenship: A Case Study of a State Enterprise in Telecommunication”, SSRU International Journal of Management Science (IJMS), 9(1). available at: https://so10.tci-thaijo.org/index.php/ssru/article/view/2635 (accessed: 21 September 2026).