HEATHFIELD, D. (1992). Modern Economics David Heathfield, Mark Russel. Harvester Wheatsheaf.
Čikaški stil citiranja (17. izdanje)HEATHFIELD, David. Modern Economics David Heathfield, Mark Russel. Harvester Wheatsheaf, 1992.
MLA način citiranja (8. izdanje)HEATHFIELD, David. Modern Economics David Heathfield, Mark Russel. Harvester Wheatsheaf, 1992.
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