MAKWANA, S. . Issues of ESD Covered in the Standard VIII Textbook of English Subject of Gujarat State. International Journal of Management and Development Studies , [S. l.], v. 2, n. 7, p. 45–51, 2013. Disponível em: https://old.ijmds.in/index.php/ijmds/article/view/415. Acesso em: 5 apr. 2026.