APA引文

Melvin, M. &. B. (2013). Principles of Economics (9th.). Cengage Learning.

Chicago Style (17th ed.) Citation

Melvin, Michael & Boyes. Principles of Economics. 9th. Canada: Cengage Learning, 2013.

MLA引文

Melvin, Michael & Boyes. Principles of Economics. 9th. Cengage Learning, 2013.