KERN, B. D. .; KILLIAN, C.; VAN DER MARS, H.; WILSON, W. J. The relationship of elementary physical education quantity to class size and weekly recess offering. Journal of Health and Physical Literacy, [S. l.], v. 4, n. Supplement 1, p. S8, 2025. Disponível em: https://johpl.org/index.php/johpl/article/view/51. Acesso em: 29 apr. 2026.