APA (7th ed.) Citation

Heilperin, M. A. (1952). The trade of nations (2nd ed.). Knopf.

Chicago Style (17th ed.) Citation

Heilperin, Michael A. The Trade of Nations. 2nd ed. New York: Knopf, 1952.

MLA (9th ed.) Citation

Heilperin, Michael A. The Trade of Nations. 2nd ed. Knopf, 1952.