1. Osterwalder, Alexander and Yves Pigneur. Business Model Generation: A Handbook for Visionaries, Game Changers, and Challengers. Hoboken, NJ: John Wiley & Sons, 2010.
2. Strategyzer. Business Model Canvas Explained. September 1, 2011. https://www.youtube.com/watch?v=QoAOzMTLP5s.
3. Heusser, Matt. “The Lean Test Canvas.” Excelon Development (blog). November 24, 2014. http://xndev.com/2014/11/the-lean-test-canvas.