Usability testing in the real world. - Carol Bergfeld Mills; Kevin F. Bury; Teresa L. Roberts; Bruce Tognazzini; Anna M. Wichansky; Paul Reed (CHI, 1986)

Reading Text from Computer Screens. - Carol Bergfeld; Linda J. Weldon (ACM Comput. Surv., 1987)

Usability testing in the real world. - Carol Bergfeld Mills (ACM SIGCHI Bull., 1987)