MUKHERJEE, Abhas. Have Fun while Celebrating IYC—2011. SCHOOL SCIENCE, [S. l.], v. 49, n. 3, p. p.24–27, 2011. Disponível em: http://ejournals.ncert.gov.in/index.php/SS/article/view/1166. Acesso em: 24 aug. 2025.