Gaya APA

Berman, Saul J.. (2011). Not for Free : Revenue Strategies For A New World . USA: Harvard Business Review.

Gaya Chicago

Berman, Saul J.. Not for Free : Revenue Strategies For A New World. USA: Harvard Business Review, 2011. Text.

Gaya MLA

Berman, Saul J.. Not for Free : Revenue Strategies For A New World. USA: Harvard Business Review, 2011. Text.

Gaya Turabian

Berman, Saul J.. Not for Free : Revenue Strategies For A New World. USA: Harvard Business Review, 2011. Print.