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Columbia : University of Missouri Press, c1995.
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2.
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New York, Harcourt, Brace [1950]
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3.
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Columbia : University of Missouri Press, c1991.
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4.
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5.
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Chapel Hill, The University of North Carolina Press, 1939.
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6.
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London, Dennis Dobson Ltd., 1947
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7.
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New Haven, Yale University Press, 1955.
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8.
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9.
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New York, Appleton-Century-Crofts [1959]
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10.
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New York, Holt, Rinehart and Winston [1960]
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