Help for the designers of Online Help Systems. - Brad Mehlenbacher; Thomas M. Duffy; Jim E. Palmer; Maria Truschel; Karen Denchfield; Ann Aaron (ACM SIGCHI Bull., 1988)

Finding Information on a Menu: Linking Menu Organization to the User's Goals. - Brad Mehlenbacher; Thomas M. Duffy; Jim E. Palmer (Hum. Comput. Interact., 1989)

Using Asynchronous Conferencing to Promote Critical Thinking: Two Implementations in Higher Education. - Susan Sloffer; Bill Dueber; Thomas M. Duffy (HICSS, 1999)

Expanding beyond a cognitivist framework. - Jamie Kirkley; Thomas M. Duffy (ACM J. Comput. Documentation, 2000)

The Effects of Teacher Social Presence on Student Satisfaction, Engagement, and Learning. - Alyssa Friend Wise; Juyu Chang; Thomas M. Duffy; Rodrigo Del-Valle (ICLS, 2004)

Student Achievement in the Cisco Networking Academy: Performance in the CCNA1 Course. - Alan R. Dennis; Hasan Çakir; Ali Korkmaz; Thomas M. Duffy; Barbara A. Bichelmeyer; JoAnne Bunnage (HICSS, 2006)

Connecting online learners at a distance: the promise and challenge of using metaphors as reference points. - Alyssa Friend Wise; Poornima Padmanabhan; Thomas M. Duffy (CSCL (2), 2009)

IT programs in high schools: lessons from the Cisco Networking Academy program. - Alan R. Dennis; Thomas M. Duffy; Hasan Çakir (Commun. ACM, 2010)