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Lua i Stíl Chicago (17ú heag.)Windham, Doughlas M. Improving the Efficiency of Educational Systems Project.: Indicators of Educational Effectiveness and Efficiency. Tallahassee, Fla., USA: IEES, 1990.
Lua MLA (8ú heag.)Windham, Doughlas M. Improving the Efficiency of Educational Systems Project.: Indicators of Educational Effectiveness and Efficiency. IEES, 1990.
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