BROWN, W. Product Analysis Princing Wilfred Brown Dan Elliott Jaques. Heinemann.
Čikaški stil citiranja (17. izdanje)BROWN, Wilfred. Product Analysis Princing Wilfred Brown Dan Elliott Jaques. Heinemann.
MLA način citiranja (8. izdanje)BROWN, Wilfred. Product Analysis Princing Wilfred Brown Dan Elliott Jaques. Heinemann.
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