Gaya APA

Froyen, R, T. (1990). Macroeconomics: Theories and Policies 4th Ed (4th Ed). New York: Macmillan Publishing Company.

Gaya MLA

Froyen, Richard, T. "Macroeconomics: Theories and Policies 4th Ed". 4th Ed New York: Macmillan Publishing Company, 1990. Text.