WANG, Yifan. Research on the Investment Value of United Airlines. Highlights in Business, Economics and Management, [S. l.], v. 22, p. 125–131, 2023. DOI: 10.54097/hp9k4h75. Disponível em: https://drpress.org/ojs/index.php/HBEM/article/view/14230. Acesso em: 22 jul. 2026.