Arney, W. R. (1990). Understanding statistics in the social sciences. New York.
Lua i Stíl Chicago (17ú heag.)Arney, William Ray. Understanding Statistics in the Social Sciences. W.H. Freeman and Co.: New York, 1990.
Lua MLA (9ú heag.)Arney, William Ray. Understanding Statistics in the Social Sciences. New York, 1990.
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