Ferguson, G. A. 1. (1989). Statistical analysis in psychology and education (6th ed.). New York: McGraw-Hill.
Παραπομπή Chicago StyleFerguson, George A. 1914-. Statistical Analysis in Psychology and Education. 6th ed. New York: McGraw-Hill, 1989.
Παραπομπή MLAFerguson, George A. 1914-. Statistical Analysis in Psychology and Education. 6th ed. New York: McGraw-Hill, 1989.
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