Wagemann, E. (1930). Economic rhythm: A theory of business cycles. London: McGraw- Hill Book Company, Inc.
Chicago-stil citatWagemann, Ernst. Economic Rhythm: A Theory of Business Cycles. London: McGraw- Hill Book Company, Inc, 1930.
MLA-referensWagemann, Ernst. Economic Rhythm: A Theory of Business Cycles. London: McGraw- Hill Book Company, Inc, 1930.
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