Bray, M., & Bray, M. (2008). Double-shift schooling: Design and operation for cost-effectiveness (3rd ed.). Unesco, International Institute for Educational Planning.
Cita Chicago (17th ed.)Bray, Mark, i Mark Bray. Double-shift Schooling: Design and Operation for Cost-effectiveness. 3rd ed. Paris: Unesco, International Institute for Educational Planning, 2008.
Cita MLA (9th ed.)Bray, Mark, i Mark Bray. Double-shift Schooling: Design and Operation for Cost-effectiveness. 3rd ed. Unesco, International Institute for Educational Planning, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.