John Battelle (2011). “The Search: How Google and Its Rivals Rewrote the Rules of Business and Transformed Our Culture”, p.178, Nicholas Brealey Publishing
John Battelle (2011). “The Search: How Google and Its Rivals Rewrote the Rules of Business and Transformed Our Culture”, p.33, Nicholas Brealey Publishing
John Battelle (2011). “The Search: How Google and Its Rivals Rewrote the Rules of Business and Transformed Our Culture”, p.210, Nicholas Brealey Publishing