“Supervisor Incivility and Employees’ Customer-Directed Extra-Role Performance Among Airport Check-In Staff: The Mediating Role of Job Insecurity”. Journal of Aviation Science and Technology (ISSN: 2815-5661) 4, no. 1 (April 21, 2026). Accessed September 16, 2026. https://jast.vau.edu.vn/index.php/jast/article/view/101.