MEHRA, Vandana; KAUR, Manpreet. Effectiveness of Outdoor Environmental Education Programme for Enhancing Responsible Environmental Behaviour among Fifth Grade Students. INDIAN EDUCATIONAL REVIEW, [S. l.], v. 50, n. 1, p. p. 19–46, 2012. Disponível em: http://ejournals.ncert.gov.in/index.php/ier/article/view/2445. Acesso em: 19 aug. 2025.