Simpson, R. F. (1966). Social factors and educational efficiency. The Hong Kong Council for Educational Research.
Chicago Style (17. basım) AtıfSimpson, R F. Social Factors and Educational Efficiency. Hong Kong: The Hong Kong Council for Educational Research, 1966.
MLA (8th ed.) AtıfSimpson, R F. Social Factors and Educational Efficiency. The Hong Kong Council for Educational Research, 1966.
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