BROWN, W. Product Analysis Princing Wilfred Brown Dan Elliott Jaques. Heinemann.
Lua i Stíl Chicago (17ú heag.)BROWN, Wilfred. Product Analysis Princing Wilfred Brown Dan Elliott Jaques. Heinemann.
Lua MLA (8ú heag.)BROWN, Wilfred. Product Analysis Princing Wilfred Brown Dan Elliott Jaques. Heinemann.
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