Purchasing Leadership’s Effectiveness in the Adoption of Procurement 4.0: A Conceptual Framework for Future Research. Journal of Leadership, Accountability and Ethics, [S. l.], v. 22, n. 2, 2025. Disponível em: https://articlearchives.co/index.php/JLAE/article/view/7522. Acesso em: 17 mar. 2026.