Clark, J. M. (1967). Preface to social economics: Essays on economic theory and social problems. Kelley.
Citace podle Chicago (17th ed.)Clark, John Maurice. Preface to Social Economics: Essays on Economic Theory and Social Problems. New York: Kelley, 1967.
Citace podle MLA (9th ed.)Clark, John Maurice. Preface to Social Economics: Essays on Economic Theory and Social Problems. Kelley, 1967.
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