APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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