Debelak, D. (1997). Entrepreneur Magazine: Bringing your product to market. John Wiley & sons.
Dyfyniad Arddull ChicagoDebelak, Don. Entrepreneur Magazine: Bringing Your Product to Market. New York: John Wiley & sons, 1997.
Dyfyniad MLADebelak, Don. Entrepreneur Magazine: Bringing Your Product to Market. John Wiley & sons, 1997.
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