Mack Ben. (2007). Think Two Products Ahead: Secrets the Big Advertising Agencies Don't Want You to Know and How to Use Them for Bigger Profits. Canada: John Wiley.
Styl cytowania ChicagoMack Ben. Think Two Products Ahead: Secrets the Big Advertising Agencies Don't Want You to Know and How to Use Them for Bigger Profits. Canada: John Wiley, 2007.
Styl cytowania MLAMack Ben. Think Two Products Ahead: Secrets the Big Advertising Agencies Don't Want You to Know and How to Use Them for Bigger Profits. Canada: John Wiley, 2007.
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