Gerald Zaltman: How Customers Think: Essential Insights into the Mind of the Marke
Jakob Nielsen: Designing Web Usability : The Practice of Simplicity
Richard Saul Wurman, David Sume, Loring Leifer: Information Anxiety 2
Gregory L. Ulmer: Heuretics: The Logic of Invention
Robert M. Gagne: Principles of Instructional Design
Peter M. Senge: The Fifth Discipline