APA استشهاد

Cramer, G. L., & Jensen, C. W. (1979). Agricultural economics and agribusiness: An introduction. John Wiley and Sons.

استشهاد بنمط شيكاغو

Cramer, G L., و C W. Jensen. Agricultural Economics and Agribusiness: An Introduction. New York: John Wiley and Sons, 1979.

MLA استشهاد

Cramer, G L., و C W. Jensen. Agricultural Economics and Agribusiness: An Introduction. John Wiley and Sons, 1979.