books.google.com - You just know that an improvement of the user interface will reap rewards, but how do you justify the expense and the labor and the time-guarantee a robust ROI!-ahead of time? How do you decide how much of an investment should be funded? And what is the best way to sell usability to others? In this completely...http://books.google.com/books/about/Cost_justifying_Usability.html?id=ZqMQOT9SMhAC&utm_source=gb-gplus-shareCost-justifying Usability