Tullis, Tom. Measuring the user experience : collecting, analyzing, and presenting usability metrics / by Tom Tullis. - Amsterdam : Morgan Kaufmann , 2008. - 317 p. ill. [chiefly b/w]; 24 cm. Includes index ISBN: 9780123735584 0123735580 Subjects--Topical Terms: User interfacesMeasurementStatistics.Usability Dewey Class. No.: 004.019