Cita APA (7th ed.)

Heibroner, R. (1968). Understanding macro economics (2nd.). Prentice Hall.

Cita Chicago (17th ed.)

Heibroner, Robert. Understanding Macro Economics. 2nd. New Jersey: Prentice Hall, 1968.

Cita MLA (9th ed.)

Heibroner, Robert. Understanding Macro Economics. 2nd. Prentice Hall, 1968.