Clark, J. B. (1968). Essentials of economic theory: As applied to modern problems of industry and public policy. A. M. Kelley.
Citace podle Chicago (17th ed.)Clark, John Bates. Essentials of Economic Theory: As Applied to Modern Problems of Industry and Public Policy. New York: A. M. Kelley, 1968.
Citace podle MLA (8th ed.)Clark, John Bates. Essentials of Economic Theory: As Applied to Modern Problems of Industry and Public Policy. A. M. Kelley, 1968.
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