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Dyfyniad Arddull ChicagoPUGH DAVID. FIRST MILE: ESSENTIALS OF ENTREPRENEURSHIP. USA: WILEY PUBLISHING, 2003.
Dyfyniad MLAPUGH DAVID. FIRST MILE: ESSENTIALS OF ENTREPRENEURSHIP. WILEY PUBLISHING, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.