Gaya APA

Osterwalder, A., Smith, Y, P, &, G, B, &, A. (2014). Value Proposition Design How to Create Products and Services Customers Want . : .

Gaya MLA

Osterwalder, Alex., Smith, Yves, Pigneur, &, Greg, Bernarda, &, Alan. "Value Proposition Design How to Create Products and Services Customers Want". : , 2014. Text.