APA引文

Clayton, G. E. (2001). Economics: Principles and practices. New York: McGraw-Hill.

Trích dẫn kiểu Chicago

Clayton, Gary E. Economics: Principles and Practices. New York: McGraw-Hill, 2001.

MLA引文

Clayton, Gary E. Economics: Principles and Practices. New York: McGraw-Hill, 2001.

警告：这些引文格式不一定是100％准确.