An experiment to assess the friendliness of error messages from interactive information retrieval systems. - Andrew Buxton; Lesley Trenner (J. Inf. Sci., 1987)

How to win friends and influence people: definitions of user-friendliness in interactive computer systems. - Lesley Trenner (J. Inf. Sci., 1987)

A comparative survey of the friendliness of online "help" in interactive information retrieval systems. - Lesley Trenner (Inf. Process. Manag., 1989)

The politics of usability - a practical guide to designing usable systems in industry. - Lesley Trenner; Joanna Bawa (Springer, 1998)