Beckerman, W. (1960). International comparisons of real incomes. United State: E.C.O.D.
Trích dẫn kiểu ChicagoBeckerman, Wilfred. International Comparisons of Real Incomes. United State: E.C.O.D, 1960.
MLA CitationBeckerman, Wilfred. International Comparisons of Real Incomes. United State: E.C.O.D, 1960.
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