Cita APA (7th ed.)
Bland, D. J., & Osterwalder, A. Testing Business Ideas. Wiley.
Cita Chicago (17th ed.)
Bland, David J., i Alexander Osterwalder. Testing Business Ideas. Hoboken, EUA: Wiley.
Cita MLA (9th ed.)
Bland, David J., i Alexander Osterwalder. Testing Business Ideas. Wiley.
Atenció: Aquestes cites poden no estar 100% correctes.