PARKASH, Parveen. ‘HEAR’ IT LOUD AND CLEAR. SCHOOL SCIENCE, [S. l.], v. 51, n. 2, p. p.87–91, 2013. Disponível em: http://ejournals.ncert.gov.in/index.php/SS/article/view/1966. Acesso em: 19 aug. 2025.