APA (7th ed.) Citation

Barro, R. J. (1990). Macroeconomic policy. Harvard University Press.

Chicago Style (17th ed.) Citation

Barro, Robert J. Macroeconomic Policy. Cambridge, (Mass.) [etc.]: Harvard University Press, 1990.

MLA (9th ed.) Citation

Barro, Robert J. Macroeconomic Policy. Harvard University Press, 1990.