(1973). Methods and techniques of business forecasting. Prentice-Hall, Inc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMethods and Techniques of Business Forecasting. Englewood Cliffs, New Jersey: Prentice-Hall, Inc, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMethods and Techniques of Business Forecasting. Prentice-Hall, Inc, 1973.
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