Mobile First
The Design of Everyday Things: Revised and Expanded Edition
100 Things Every Designer Needs to Know About People (Voices That Matter)
Simple and Usable Web, Mobile, and Interaction Design (Voices That Matter)
Usability Engineering
Prioritizing Web Usability
Mobile Design Pattern Gallery: UI Patterns for Smartphone Apps
Don't Make Me Think, Revisited: A Common Sense Approach to Web Usability (3rd Edition) (Voices That Matter)
The User Experience Team of One: A Research and Design Survival Guide