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Englewood Cliffs, N. J. Prentice-Hall, 1956.
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2.
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Englewood Cliffs, N.J., Prentice-Hall [1964]
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3.
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Oxford : Clarendon Press ; New York : Oxford University Press, 1984.
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4.
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New York : Scribner, c1976.
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5.
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[Chicago] University of Chicago Press [1967, c1956]
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6.
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London, Aldus Books [c1973]
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7.
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London, Hutchinson University Library [c1957]
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8.
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9.
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[Chicago] University of Chicago Press [1968]
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10.
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New York, McGraw-Hill c1971.
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