Usability: Evaluating Documents and Websites http://distanceed.hss.kennesaw.edu/technicalcommunication/chapters/6UsabilityTesting/
ASU Usability Testing Lab https://www.angelo.edu/dept/english_modern_languages/usability.php
Usability Lab Texas State Usability and Research Lab https://matc.english.txstate.edu/usability-lab.html
Usability: How Technical Writing Succeeds https://www.ebstc.org/usability/
Implementing Usability Testing Of Technical Documents At Any Company And On Any Budget https://stars.library.ucf.edu/cgi/viewcontent.cgi?referer=https://www.google.com/&httpsredir=1&article=5372&context=etd
Usability Testing: Top 8 Tips for Designing Usability Tests https://jerz.setonhill.edu/writing/technical-writing/usability-testing/usability-tips/