APA引文

Economics: Principles, Problems, and Policies. McGraw-Hill/Irwin.

Trích dẫn kiểu Chicago

Economics: Principles, Problems, and Policies. McGraw-Hill/Irwin.

MLA引文

Economics: Principles, Problems, and Policies. McGraw-Hill/Irwin.

警告：这些引文格式不一定是100％准确.