Ferguson, G. A. (1981). Statistical analysis in psychology and education (5th ed.). McGraw-Hill.
Citace podle Chicago (17th ed.)Ferguson, George Andrew. Statistical Analysis in Psychology and Education. 5th ed. New York: McGraw-Hill, 1981.
Citace podle MLA (9th ed.)Ferguson, George Andrew. Statistical Analysis in Psychology and Education. 5th ed. McGraw-Hill, 1981.
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