Windham, D. M. (1990). Improving the Efficiency of Educational Systems Project.: Indicators of educational effectiveness and efficiency. IEES.
Cita Chicago (17th ed.)Windham, Doughlas M. Improving the Efficiency of Educational Systems Project.: Indicators of Educational Effectiveness and Efficiency. Tallahassee, Fla., USA: IEES, 1990.
Cita MLA (8th ed.)Windham, Doughlas M. Improving the Efficiency of Educational Systems Project.: Indicators of Educational Effectiveness and Efficiency. IEES, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.