thomsen, f. l. (1951). Agricultural marketing. mcgraw hill book company, inc.
Čikaški stil citiranja (17. izdanje)thomsen, frederick lundy. Agricultural Marketing. new york , london: mcgraw hill book company, inc, 1951.
MLA način citiranja (9. izdanje)thomsen, frederick lundy. Agricultural Marketing. mcgraw hill book company, inc, 1951.
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