APA (7th ed.) Citation

Clark, J. B. (1968). Essentials of economic theory; as applied to modern problems of industry and public policy. A.M. Kelley.

Chicago Style (17th ed.) Citation

Clark, John Bates. Essentials of Economic Theory; as Applied to Modern Problems of Industry and Public Policy. New York: A.M. Kelley, 1968.

MLA (9th ed.) Citation

Clark, John Bates. Essentials of Economic Theory; as Applied to Modern Problems of Industry and Public Policy. A.M. Kelley, 1968.