Gaya APA

Pauwels, Koen, Weiss, Allen. (). Moving from free to fee: how online firms market to change their business model successfully . : American Marketing Association.

Gaya Chicago

Pauwels, Koen, Weiss, Allen. Moving from free to fee: how online firms market to change their business model successfully. : American Marketing Association, . Text.

Gaya MLA

Pauwels, Koen, Weiss, Allen. Moving from free to fee: how online firms market to change their business model successfully. : American Marketing Association, . Text.

Gaya Turabian

Pauwels, Koen, Weiss, Allen. Moving from free to fee: how online firms market to change their business model successfully. : American Marketing Association, . Print.