Dyfyniad APA

J.Berman Saul. (2011). Not for Free: Revenue Strategies for a New World. American: Harvard Business Review Book.

Dyfyniad Arddull Chicago

J.Berman Saul. Not for Free: Revenue Strategies for a New World. American: Harvard Business Review Book, 2011.

Dyfyniad MLA

J.Berman Saul. Not for Free: Revenue Strategies for a New World. American: Harvard Business Review Book, 2011.

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