Lua APA (7ú heag.)

Welkowitz, J., & Ewen, R. B. ,. (1971). Introductory statistics for the behavioral sciences. Academic Press.

Lua i Stíl Chicago (17ú heag.)

Welkowitz, Joan, agus Robert B. ,Cohen Ewen. Introductory Statistics for the Behavioral Sciences. New York: Academic Press, 1971.

Lua MLA (9ú heag.)

Welkowitz, Joan, agus Robert B. ,Cohen Ewen. Introductory Statistics for the Behavioral Sciences. Academic Press, 1971.

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