Charles A Beard. (1966). an economic interpretation of the constitution of the united states (In lần thứ 1.). New York: The Free Press.
Παραπομπή Chicago StyleCharles A Beard. An Economic Interpretation of the Constitution of the United States. In lần thứ 1. New York: The Free Press, 1966.
Παραπομπή MLACharles A Beard. An Economic Interpretation of the Constitution of the United States. In lần thứ 1. New York: The Free Press, 1966.
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