Beard, C. A. (1939). America in midpassage, by Charles A. Beard & Mary R. Beard; illustrated from drawings by Wilfred Jones. Macmillan.
Citace podle Chicago (17th ed.)Beard, Charles A. America in Midpassage, by Charles A. Beard & Mary R. Beard; Illustrated from Drawings by Wilfred Jones. New York: Macmillan, 1939.
Citace podle MLA (9th ed.)Beard, Charles A. America in Midpassage, by Charles A. Beard & Mary R. Beard; Illustrated from Drawings by Wilfred Jones. Macmillan, 1939.
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