OPERIO, J. H. Practical Leadership: Learning from Great Rulers in History. Journal of Social Entrepreneurship Theory and Practice, [S. l.], v. 1, n. 2, p. 30–37, 2021. DOI: 10.31098/jsetp.v1i2.731. Disponível em: https://journals.researchsynergypress.com/index.php/jsetp/article/view/731. Acesso em: 28 mar. 2024.