Eric Ries (2011). “The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses”, p.111, Crown Business
Eric Ries (2011). “The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses”, p.20, Crown Business
Eric Ries (2011). “The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses”, p.207, Crown Business
Eric Ries (2011). “The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses”, p.48, Crown Business
Eric Ries (2011). “The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses”, p.64, Crown Business