Cita APA

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

Chicago Edition Citation

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

Cita MLA

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