Gray, A. (1961). The development of economic doctrine. John Wiley & Sons.
Čikaški stil citiranja (17. izdanje)Gray, Alexander. The Development of Economic Doctrine. New York: John Wiley & Sons, 1961.
MLA način citiranja (9. izdanje)Gray, Alexander. The Development of Economic Doctrine. John Wiley & Sons, 1961.
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