1. Yahoo! Design Pattern Library, http://developer.yahoo.com/ypatterns/
2. Patterns in Interaction Design, http://www.welie.com/
3. Designing Interfaces, http://www.designinginterfaces.com/
4. Tidwell, J.: Designing Interfaces. O’Reilly Media, Inc, Sebastopol (2005)
5. Van Duyne, D.K., Landay, J.A., Hong, J.I.: The Design of Sites: Patterns, Principles, and Processes for Crafting a Customer-centered Web Experience. Addison-Wesley Professiona, Reading (2003)