Cramer, G. L., & Jensen, C. W. (1997). Agricultural economics and agribusiness (6th. ed.). john wiley & sons, inc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCramer, Gail L., और Clarence W. Jensen. Agricultural Economics and Agribusiness. 6th. ed. New York: john wiley & sons, inc, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCramer, Gail L., और Clarence W. Jensen. Agricultural Economics and Agribusiness. 6th. ed. john wiley & sons, inc, 1997.