APA引文

Berman Saul J. (2011). Not For Free: Revenue Strategies for a new world. Harvard Business Review Press.

Chicago Style (17th ed.) Citation

Berman Saul J. Not For Free: Revenue Strategies for a New World. Boston: Harvard Business Review Press, 2011.

MLA引文

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