Cita APA (7th ed.)
Osterwalder, A. Value proposition design. Wiley.
Cita Chicago (17th ed.)
Osterwalder, Alexander. Value Proposition Design. Wiley.
Cita MLA (9th ed.)
Osterwalder, Alexander. Value Proposition Design. Wiley.
Atenció: Aquestes cites poden no estar 100% correctes.