BINGHAM, R. C. Economic concepts#a programmed approach#Robert C. Bingham. McGrow Hill Book Company.
Citace podle Chicago (17th ed.)BINGHAM, Robert C. Economic Concepts#a Programmed Approach#Robert C. Bingham. McGrow Hill Book Company.
Citace podle MLA (8th ed.)BINGHAM, Robert C. Economic Concepts#a Programmed Approach#Robert C. Bingham. McGrow Hill Book Company.
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