APA引文

Cramer, G. L. (2001). Agricultural economics and agribusiness. New York: John Wiley.

Trích dẫn kiểu Chicago

Cramer, Gail L. Agricultural Economics and Agribusiness. New York: John Wiley, 2001.

MLA引文

Cramer, Gail L. Agricultural Economics and Agribusiness. New York: John Wiley, 2001.

警告：這些引文格式不一定是100％准確.