Citazione Stile APA (7a Edizione)

Williams, H. R. (1967). Macroeconomics: Problems, concepts, and self-tests. W.W. Norton.

Citazione stile Chigago Style (17a edizione)

Williams, Harold R. Macroeconomics: Problems, Concepts, and Self-tests. New York: W.W. Norton, 1967.

Citatione MLA (9a ed.)

Williams, Harold R. Macroeconomics: Problems, Concepts, and Self-tests. W.W. Norton, 1967.