Dyer, H. S. (1960). Manual for analyzing results of an educational experiment (Analysis of convariance). Educational Testing Service.
Lua i Stíl Chicago (17ú heag.)Dyer, Henry S. Manual for Analyzing Results of an Educational Experiment (Analysis of Convariance). New Jersey: Educational Testing Service, 1960.
Lua MLA (9ú heag.)Dyer, Henry S. Manual for Analyzing Results of an Educational Experiment (Analysis of Convariance). Educational Testing Service, 1960.
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