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.