Cowles, V. (1956). Winston Churchill: The era and the man. New York: The Universal Library.
Trích dẫn kiểu ChicagoCowles, Virginia. Winston Churchill: The Era and the Man. New York: The Universal Library, 1956.
MLA citiranjeCowles, Virginia. Winston Churchill: The Era and the Man. New York: The Universal Library, 1956.
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