APA引文

Boyes,William, & Melvin,Michael. (2003). Principles of Economics. Cengage Learning.

Chicago Edition Citation

Boyes,William, and Melvin,Michael. Principles of Economics. Australia: Cengage Learning, 2003.

MLA引文

Boyes,William, and Melvin,Michael. Principles of Economics. Cengage Learning, 2003.

警告：这些引文格式不一定是100％准确.