APA引文

Authors. (2002). Economics: Principles and Practices. U.S.A: McGraw-Hill.

Trích dẫn kiểu Chicago

Authors. Economics: Principles and Practices. U.S.A: McGraw-Hill, 2002.

MLA引文

Authors. Economics: Principles and Practices. U.S.A: McGraw-Hill, 2002.

警告：这些引文格式不一定是100％准确.