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Dyfyniad Arddull ChicagoLa Piana, David. Play to Win: The Nonprofit Guide to Competitive Strategy. San Francisco: Jossey-Bass, 2005.
Dyfyniad MLALa Piana, David. Play to Win: The Nonprofit Guide to Competitive Strategy. San Francisco: Jossey-Bass, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.