Epstein, Richard A.
The Theory of gambling and statistical logic
Academic Press, 1977
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Lefton, Lester A.
Psychology
Allyn and bacon , 1997
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Wortman, Camille B.
Psychology
McGraw-Hill, 1992
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Myers, David G.
Psychology
Worth, 1986
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Gray, Peter
Psychology
Worth Publishers, 1999
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