BINGHAM, R. C. Economic concepts#a programmed approach#Robert C. Bingham. McGrow Hill Book Company.
Čikaški stil citiranja (17. izdanje)BINGHAM, Robert C. Economic Concepts#a Programmed Approach#Robert C. Bingham. McGrow Hill Book Company.
MLA način citiranja (8. izdanje)BINGHAM, Robert C. Economic Concepts#a Programmed Approach#Robert C. Bingham. McGrow Hill Book Company.
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