APA (7 वां संस्करण) प्रशस्ति पत्र

HARVARD BUSINESS REVIEW. (1976). FORECASTING. HARVARD BUSINESS REVIEW.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

HARVARD BUSINESS REVIEW. FORECASTING. BOSTON: HARVARD BUSINESS REVIEW, 1976.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

HARVARD BUSINESS REVIEW. FORECASTING. HARVARD BUSINESS REVIEW, 1976.