Dyfyniad APA

Silk, L. S., & Curley, M. L. (1956). Forecasting business trends. McGraw-Hill.

Dyfyniad Arddull Chicago

Silk, Leonard Solomon, and M. Louise Curley. Forecasting Business Trends. [New York: McGraw-Hill, 1956.

Dyfyniad MLA

Silk, Leonard Solomon, and M. Louise Curley. Forecasting Business Trends. McGraw-Hill, 1956.

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