GROSS, C. W., & GROSS, C. W. (1976). Business Forecasting Charles W. Gross And Robin T. Peterson. Houghton Mifflin Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGROSS, Charles W., और Charles W. GROSS. Business Forecasting Charles W. Gross And Robin T. Peterson. Houghton Mifflin Company, 1976.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGROSS, Charles W., और Charles W. GROSS. Business Forecasting Charles W. Gross And Robin T. Peterson. Houghton Mifflin Company, 1976.
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