Rubin, J., & Chisnell, D. (2008). Handbook of usability testing: How to plan, design, and conduct effective tests (2nd ed.). Wiley Pub..

Rubin, Jeffrey, and Dana Chisnell. Handbook of Usability Testing: How to Plan, Design, and Conduct Effective Tests. 2nd ed. Indianapolis, IN: Wiley Pub., 2008.

Rubin, Jeffrey, and Dana Chisnell. Handbook of Usability Testing: How to Plan, Design, and Conduct Effective Tests. 2nd ed. Wiley Pub., 2008.