Designing with Data: Improving the User Experience with A/B Testing
Rochelle King, Elizabeth F. Churchill, Caitlin Tan
Research for Designers: A Guide to Methods and Practice
Gjoko Muratovski
Think Like a UX Researcher: How to Observe Users, Influence Design, and Shape Business Strategy
David Travis y Philip Hodson
Product Research Rules
Aras Bilgen, C. Todd Lombardo, Michael Connors