दास प्रथा का इतिहास: दास प्रथा के इतिहास में दासता का भूमिका एवं प्रभाव. Journal of Advances and Scholarly Researches in Allied Education, [S. l.], v. 4, n. 7, p. 1–7, 2012. Disponível em: https://ignited.in/index.php/jasrae/article/view/4384.. Acesso em: 9 jun. 2025.