BERGER, Neal H.; BARRIOS, Nina B.; WILLIAMS, Howard; FOSTER, Garrett. The Flexible Policy for the Seventh Period/Extended School Day in Florida. Florida Journal of Educational Research, [S. l.], v. 28, n. 1, p. 109–124, 1986. DOI: 10.62798/NLUD7132. Disponível em: https://journals.flvc.org/fjer/article/view/133731. Acesso em: 13 jun. 2025.