Dyfyniad APA

 Lafley, A. G. (2013).  Playing to win: How strategy really works.  Harvard Business Review Press.

Dyfyniad Arddull Chicago

 Lafley, A. G.  Playing to Win: How Strategy Really Works.  Harvard Business Review Press, 2013.

Dyfyniad MLA

 Lafley, A. G.  Playing to Win: How Strategy Really Works.  Harvard Business Review Press, 2013.

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