Bratt, E. C. (1949). Business cycles and forecasting. Chicago: Richard D. Irwin, Inc.
Trích dẫn kiểu ChicagoBratt, Elmer Clark. Business Cycles and Forecasting. Chicago: Richard D. Irwin, Inc, 1949.
MLA CitationBratt, Elmer Clark. Business Cycles and Forecasting. Chicago: Richard D. Irwin, Inc, 1949.
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